PS: They must like your page before you can make them as an admin.
Make someone an admin on a Facebook page
- View your Facebook page’s timeline.
- Click ‘Edit Page’ button located at the very top of your page then select ‘Manage Admin Roles’ from the menu.
- Enter the email address or the name of the new admin. Fill it up.
- If you want to add more admin, then select ‘Add another admin’ and if not just save it. If you want to make an admin from your friend list, just enter their Facebook name and then save.
Congratulations, you just got a new admin for your Facebook page.
Now, coming to the technical terms and know-abouts that you must be aware of before you start to go on with the operation… Make sure that the person who is about to be the admin has an email address registered with Facebook. If a registered email is not given, the authority won’t be able to carry on with the task.