Add admins and testers in Facebook (Ultimate)

 

To add Facebook testers:

1. Go to https://developers.facebook.com/
2. Go to My Apps > Choose the app of the Facebook Page
3. From the left panel, go to Roles > Roles
   
   1. 1. To add Administrators, click on Add Administrator
      2. To add Developers, click on Add Developers
      3. To add Testers, click on Add Testers
4. Add the Facebook User ID of the person you want to add

The username or Facebook ID can be found on the user's profile here:

https://www.facebook.com/FACEBOOK_USER_ID

 

For more information, have a look at this Facebook article on Test Users.