Here are the steps to make someone an admin on your Facebook page:
1. Sign in to your Facebook account via facebook.com.
2. Navigate to the page you wish to add someone as an admin and click it.
3. In the page’s upper right area, select Settings.
4. From the left-hand menu, select Page Roles.
5. Under Assign a New Page Role, enter the name or email address of the person you want to add as an admin.
6. Select Admin from the dropdown menu.
7. Click Add.
That's it! The person you added will receive a notification that they have been added as an admin on your Facebook page .
