The merchants in CM Live Deal component are actually Joomla! users that are in a specific user group.
In your back-end, you navigate to
You can see the list of current user groups on your site. Click
New button in the toolbar to create a new user group.
You give your new user group a name by entering the name in
Group Title field. You select a parent group in
Group Parent option. Because merchant is just a registered user so you can select
Registered as the parent group, you can always select a different group if you are already familiar with Jooma!‘s user group and access level.
After creating the user group, you can see it displayed in the group list as the screenshot below.