To transfer ownership of an app click on the app in your Pusher Dashboard. Scroll down to the bottom of the next page and click the "Add Collaborators" button. 

To add a collaborator enter their email address in the “Add collaborator” box. Once added you will see their email, role, access and available actions in the table.

To transfer ownership of the app click “Transfer app” in the actions column next to the selected team member’s row. You will be prompted to confirm you want to transfer the app. Click "Transfer".

You can also remove a collaborators access to the app by clicking “Remove”.