Create an Admin User
This article will show you how to grant administrative access to an existing user.
Here is a video that demonstrates the process of giving administrative access to a user:
First, you want to identify which user you want to give admin access to. Go to their user details page (People > Users > Select a user) and click "Edit User" at the top right corner of the screen.
Scroll down to the Groups Menu. Here you will see Admin Groups, and you want to move New Administrator to the left hand side.
Don't forget to click Save and Return at the top right!