Here are the steps that you will need to follow in order to give someone the Manager permission:

  1. Go to Organization Settings
  2. Select the "Members" section from the left navigation menu
  3. Click on the person's name
  4. Click the "Edit" button (top right) 
  5. Check the "Manager" box

Please note:

- Only owner and managers can assign the "Manager" permission.

- An Organization can have any number of Managers.