To assign a template to your interface:
Note: In the list of templates, the template currently used for the administrator's interface is shown in italic. The default template name is displayed in bold. If you are using the default template, it is marked as bold italic.
To assign a template to a client account:
This number shows the number of user accounts that currently use this template.
The template will be assigned to the selected user accounts.
Note: You can also assign a template to a user when you are creating a new user account or changing account preferences.