[AccessD] I need a count of checkboxes in a report

I'm trying to whip up a report for a client who uses one of my programs.
They are tracking the meal sites for the elderly and I have provided a
list, by site, with their client's names, age, gender, race, etc.. There
are also six boolean fields that they track...for instance, "Low
Income"...and I need to count the ones that are checked for each site.
 
I know this is easy, and I could have swore I've done it before, but I
cannot figure out how at this particular moment.
 
John W Clark