If you are not Administrator and don`t have permission to Workspace, Project of File, you can request it.
This is the list of Workspaces in the Tenant, the ones with lock are not available, because user doesn`t have permissions on them.
User can click on Request permission button and select which Permission he would like to request from Administrator.
User can request permissions in Advanced mode and select not only himself, but also the group of people
Then he clicks Request to send the permission request
Administrator receives the letter with User request from
Clicking Open Nexus he gets such window, where he can Approve or Decline the request for permission from User.
Customer support service by UserEcho