Step 1: Log in to your personal Linkedin profile account.
Step 2: Search for your company page (be sure that you are currently an admin on your company page)
Step 3: In top right select the drop down arrow next to “Admin Tools” and select ‘Page Admins”
Step 4: Add a new name to select the person you would like to add as an admin. Then select ‘SAVE CHANGES’ button.
Important – You MUST already have a connection with the person before you can add them as an admin.