You'll need to be an admin to give someone a role on your Page. If you're an admin:
- Click Settings at the top of your Page.
- Click Page Roles in the left column.
- If the person is your Facebook friend, begin typing their name and select them from the list that appears. If the person isn't your Facebook friend, type their email address.
- Click Editor to select a role from the dropdown menu.
- Click Save and enter your password to confirm.