Add or remove managers to your page
The page owner can invite additional people to manage the page. Keep in mind that there’s a limit of 50 managers per page, and only 20 people per day can be invited to manage a page.
Only an owner can add or remove managers to a page, however, a manager may remove himself or herself from a page.
Access your page management options by selecting Pages from the Google+ main navigation and clicking managers associated with the Page you'd like to change.
To add a manager to your Google+ page click Add manager, enter their email address or invite by profile, and click Invite.
This page displays all the active managers, as well as people who have been invited to become managers. When a manager invitation is accepted, the owner of the page will be notified via email. The owner and all managers can view the names and email addresses listed on this page.
You can cancel pending invitations by clicking the X in the row with the invitation you want to remove.
To remove a manager, or remove yourself as a manager of a page, click the X associated with the person you'd like to remove.
When a manager is removed, both the former manager and the page owner will be notified and told who removed them.
Learn how to transfer ownership of your Google+ page.