Question

How to give or pass admin rights to another user?

Answer

Any admin or owner could make another user an admin or remove the admin right from him, except for the Owner. An admin changes the rights of other users by clicking on the drop-down lists in the user grid.

To add admin rights to the user, please do the following:

1. Click on 3 dots on the right-hand side
   
2. Select Account Settings
   
3. Select the Users option on the left
   
4. Select the target user account and then click on the “Promote to Admin” option – as per the red box below
   

Note:
There can be multiple Users under an account with Admin access. 

More information at
https://help.abbyy.com/en-us/timeline/5/user_guide/projectdetailspanel/