As a major organization with various locations, you may want to create an ‘Organization’ that the other locations can be invited to connect to. This allows the master account to have various locations tied to it.
Click on ‘Organizations’ on the left sidebar
Click on the icon with the user and +
Enter the Training Manager’s email and click 'Invite'
An invite email will be sent to the Training Manager and they will have to click on the link to accept the invite and create their account.