How to grant admin access in Visual Studio Online

• Sign in to Visual Studio Online (youraccount.visualstudio.com) as the account owner.
• On dashboard, select the appropriate team project as highlighted in the screenshot below

• On team project dashboard, click on settings icon located at the top right bar.

• Click on Default collection.
• Navigate to Security tab and click on Users link followed by Member of link as highlighted

• Search for the user by typing in the name to whom the permissions have to be assigned, and click Join group.
• Select following two items from the list shown below and click on save changes.
• Project Collection Administrators
• Project Collection Service Accounts

Please note in case of multiple users, the same steps need to be followed for each one of them.