In TaskReviewer it is easy to allow other users to manage your TaskReviewer subscription if you no longer with to do so, through our web app (we will be bringing these controls into the extension soon!).
Simply go to My Account from the Browser extension, then click on the Team Tab on the left side of the screen (Admins and Account Owners only by default).
Manage Subscriptions Permissions
If you wish users to be able to manage billing/invoices and the current plan then you can enable manage subscription permissions
This will allow the user(s) to access the subscription and billing section on the left hand panel of the Web App