Google Plus page owners can invite additional people to help manage a page. This is very helpful, so owners can allow others to help with page maintenance. Owners can add a limit of 50 people to manage a page and only the owner has the ability to add & remove managers. Although a manager can remove themselves from a page.
How to Add a Manager?
All active mangers with have their name and email information displayed for the owner and fellow mangers to see.
Step 1. Login to your Google plus page and click on the Home tab on the left
Step 2. In the gear drop down menu on the top right corner, click settings
Step 3. Click the Managers tab at the top left side
Step 4. Click Add Manager and you can enter emails of the people you want to add
How to Remove a Manager?
Once you remove a manager they will no longer be able to make any changes to your page and all past work from the removed manager will not be harmed.
Step 1. Login to your Google plus page that you want to manage
Step 2. In the gear drop down menu on the top right corner, click settings
Step 3. Click the Managers tab at the top left side
Step 4. To remove the manager click the X associated with the person