When the admin of a project, team or a discussion exits the organization; then members of these projects, teams or discussions can now request admin access from the members view.
David is the only member of the team, and needs to add others but cannot since he is not the Admin. So he gets an option to 'Request admin access'.
Selecting the option an approval request is sent to the Organization Admin; and an indication is given to the requestor saying 'Admin access pending approval'
The organization admins (Admin team) will receive an approval request which can be approved or rejected.
When approved the request is shown as approved for the Admin team; with an indication who has approved it.
The requestor will get a message in the team that admin access has been granted.
The members view will show David as the admin now.
At a time only one member can request admin access.