Site administrators have permissions to do anything. Users may be assigned the role of site administrator by another site administrator.
Step 1. Select Administration
Step 2. Select Site Administration
Step 3. Select Users tab
Step 4. Scroll down to find the Permissions category
Step 5. Select Site Administrators
Step 6. Select the user/users that you'd like to add as a site administrator from the Users box (Right side). Use the search box at the bottom of the box to search for users if the list is excessively long.
Step 7. Click Add
Step 8. The newly appointed site administrator will appear in the Current Site Administrators box (Left Side)