Click the drop-down on the top right corner, then click Subscriptions.
Step 3 - On the Subscriptions page, search for the license ID. Then click the licensename link, found in the Name column. The target license subscription information will appear.
Step 4 - The target license's subscription page will show the License usage tab by default. Click the License details tab to its right.
Step 5 - On the License details page, scroll to the bottom and click the Manage License Users button.
Step 6 - The License User Management page will open with the target license selected.
Step 7 - Click the Manage User Notifications button at the bottom of the page.
Step 8 - Then click the Associate Existing Contacts button. A list of the users associated with the target license will appear.
Step 9 -Click the Add existing license users button(above the table labeled List of users who have access to this license)
Step10 - From the Email list, select the target user's email address. You can also press Control and click to select multiple emails from the list. Click the License Notifications and/or Maintenance Notifications checkboxes as if you want to enable or disable those notifications for the user(s) .
Step 11 - Click the Save user(s) button to save these user and notification changes.