On every event in Check-Ins you'll see a new "Headcounts" tab on the left. In it you'll find the Standard Headcounts at the top; Regulars, Guests, and Volunteers. These Standard Headcounts aren't editable, as they are the physical Check-ins you add in Station mode.
Below that, you'll see where you can create your own Custom Headcounts that can be anything you'd like. In the below example you'll see I want to track my regular Worship Attendance, and how many Ushers are at each Service.
Headcounts does not affect your daily Check-In limit, so there's no need to upgrade your package level. Also, if your church isn't using Check-Ins yet, but would like to use Headcounts, you can use the free plan of Check-Ins.
For more information on how to set up Headcounts check out this article on creating Headcounts.
The Check-Ins Team
Scott, Robert, Jake, and Jesse