Sharing Google Tag Manager accesses
To set up access to Google Tag Manager, log in to your account at tagmanager.google.com. In the Manager section, click the Manage Users button.
Add a new user with the blue button in the top right corner. Enter the email admin@proficio.cz, select Administrator access, and use the bottom right button to set the publishing rights for the container.
Activate all permissions and proceed by clicking Finish and Invite.