Update doc (16989)

Signed-off-by: Nester.zhou <ester.zhou@huawei.com>

en/application-dev/reference/apis/js-apis-enterprise-dateTimeManager.md

 # @ohos.enterprise.dateTimeManager (System Time Management)
 
-The **dateTimeManager** module provides APIs for system time management, which can only be called by device administrator applications.
+The **dateTimeManager** module provides APIs for system time management. Only the enterprise device administrator applications can call the APIs provided by this module.
 
 > **NOTE**
 > 
@@ -30,7 +30,7 @@ Sets the system time. This API uses an asynchronous callback to return the resul
 | ----- | ----------------------------------- | ---- | ------- |
 | admin | [Want](js-apis-app-ability-want.md) | Yes   | Device administrator application.|
 | time  | number | Yes| Timestamp (ms).|
-| callback | AsyncCallback\<void> | Yes| Callback used to return the result. If the setting is successful, **err** is **null**. Otherwise, **err** is an error object.|
+| callback | AsyncCallback\<void> | Yes| Callback used to return the result. If the operation is successful, **err** is **null**. Otherwise, **err** is an error object.|
 
 **Error codes**
 
@@ -101,3 +101,181 @@ dateTimeManager.setDateTime(wantTemp, 1526003846000).then(() => {
     console.log("error code:" + error.code + " error message:" + error.message);
 })
 ```
+
+## dateTimeManager.disallowModifyDateTime<sup>10+</sup>
+
+disallowModifyDateTime(admin: Want, disallow: boolean, callback: AsyncCallback\<void>): void
+
+Disables modification of the system time. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.ENTERPRISE_SET_DATETIME
+
+**System capability**: SystemCapability.Customization.EnterpriseDeviceManager
+
+**System API**: This is a system API.
+
+**Parameters**
+
+| Name  | Type                                 | Mandatory  | Description     |
+| ----- | ----------------------------------- | ---- | ------- |
+| admin | [Want](js-apis-app-ability-want.md) | Yes   | Device administrator application.|
+| disallow  | boolean | Yes| Whether to disable modification of the system time. The value **true** means to disable modification of the system time, and **false** means the opposite.|
+| callback | AsyncCallback\<void> | Yes| Callback used to return the result. If the operation is successful, **err** is **null**. Otherwise, **err** is an error object.|
+
+**Error codes**
+
+For details about the error codes, see [Enterprise Device Management Error Codes](../errorcodes/errorcode-enterpriseDeviceManager.md).
+
+| ID| Error Message                                                                     |
+| ------- | ---------------------------------------------------------------------------- |
+| 9200001 | the application is not an administrator of the device.                       |
+| 9200002 | the administrator application does not have permission to manage the device. |
+
+**Example**
+
+```js
+let wantTemp = {
+    bundleName: "bundleName",
+    abilityName: "abilityName",
+};
+dateTimeManager.disallowModifyDateTime(wantTemp, true, (error) => {
+    if (error) {
+        console.log("error code:" + error.code + " error message:" + error.message);
+    }
+})
+```
+
+## dateTimeManager.disallowModifyDateTime<sup>10+</sup>
+
+disallowModifyDateTime(admin: Want, disallow: boolean): Promise\<void>
+
+Disables modification of the system time. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.ENTERPRISE_SET_DATETIME
+
+**System capability**: SystemCapability.Customization.EnterpriseDeviceManager
+
+**System API**: This is a system API.
+
+**Parameters**
+
+| Name  | Type                                 | Mandatory  | Description     |
+| ----- | ----------------------------------- | ---- | ------- |
+| admin | [Want](js-apis-app-ability-want.md) | Yes   | Device administrator application.|
+| disallow  | boolean | Yes| Whether to disable modification of the system time. The value **true** means to disable modification of the system time, and **false** means the opposite.|
+
+**Return value**
+
+| Type  | Description                                 |
+| ----- | ----------------------------------- |
+| Promise\<void> | that returns no value. If the operation fails, an error object is thrown.|
+
+**Error codes**
+
+For details about the error codes, see [Enterprise Device Management Error Codes](../errorcodes/errorcode-enterpriseDeviceManager.md).
+
+| ID| Error Message                                                                     |
+| ------- | ---------------------------------------------------------------------------- |
+| 9200001 | the application is not an administrator of the device.                        |
+| 9200002 | the administrator application does not have permission to manage the device. |
+
+**Example**
+
+```js
+let wantTemp = {
+    bundleName: "bundleName",
+    abilityName: "abilityName",
+};
+dateTimeManager.disallowModifyDateTime(wantTemp, true).then(() => {
+}).catch((error) => {
+    console.log("error code:" + error.code + " error message:" + error.message);
+})
+```
+
+## dateTimeManager.isModifyDateTimeDisallowed<sup>10+</sup>
+
+isModifyDateTimeDisallowed(admin: Want, callback: AsyncCallback\<boolean>): void
+
+Checks whether modification of the system time is disabled. This API uses an asynchronous callback to return the result.
+
+**Required permissions**: ohos.permission.ENTERPRISE_SET_DATETIME
+
+**System capability**: SystemCapability.Customization.EnterpriseDeviceManager
+
+**System API**: This is a system API.
+
+**Parameters**
+
+| Name  | Type                                 | Mandatory  | Description     |
+| ----- | ----------------------------------- | ---- | ------- |
+| admin | [Want](js-apis-app-ability-want.md) | Yes   | Device administrator application.|
+| callback | AsyncCallback\<boolean> | Yes| Callback used to return the result. The value **true** means that modification of the system time is disabled, and **false** means the opposite.|
+
+**Error codes**
+
+For details about the error codes, see [Enterprise Device Management Error Codes](../errorcodes/errorcode-enterpriseDeviceManager.md).
+
+| ID| Error Message                                                                     |
+| ------- | ---------------------------------------------------------------------------- |
+| 9200001 | the application is not an administrator of the device.                       |
+| 9200002 | the administrator application does not have permission to manage the device. |
+
+**Example**
+
+```js
+let wantTemp = {
+    bundleName: "bundleName",
+    abilityName: "abilityName",
+};
+dateTimeManager.isModifyDateTimeDisallowed(wantTemp, (error) => {
+    if (error) {
+        console.log("error code:" + error.code + " error message:" + error.message);
+    }
+})
+```
+
+## dateTimeManager.isModifyDateTimeDisallowed<sup>10+</sup>
+
+isModifyDateTimeDisallowed(admin: Want): Promise\<boolean>
+
+Checks whether modification of the system time is disabled. This API uses a promise to return the result.
+
+**Required permissions**: ohos.permission.ENTERPRISE_SET_DATETIME
+
+**System capability**: SystemCapability.Customization.EnterpriseDeviceManager
+
+**System API**: This is a system API.
+
+**Parameters**
+
+| Name  | Type                                 | Mandatory  | Description     |
+| ----- | ----------------------------------- | ---- | ------- |
+| admin | [Want](js-apis-app-ability-want.md) | Yes   | Device administrator application.|
+
+**Return value**
+
+| Type  | Description                                 |
+| ----- | ----------------------------------- |
+| Promise\<boolean> | Promise Promise used to return the result. The value **true** means that modification of the system time is disabled, and **false** means the opposite.|
+
+**Error codes**
+
+For details about the error codes, see [Enterprise Device Management Error Codes](../errorcodes/errorcode-enterpriseDeviceManager.md).
+
+| ID| Error Message                                                                     |
+| ------- | ---------------------------------------------------------------------------- |
+| 9200001 | the application is not an administrator of the device.                        |
+| 9200002 | the administrator application does not have permission to manage the device. |
+
+**Example**
+
+```js
+let wantTemp = {
+    bundleName: "bundleName",
+    abilityName: "abilityName",
+};
+dateTimeManager.disallowModifyDateTime(wantTemp).then(() => {
+}).catch((error) => {
+    console.log("error code:" + error.code + " error message:" + error.message);
+})
+```