I am working an invite list.

I have 30 fields for each record.  When using a query, I shorten it down to
Title, First Name, Last Name, Spouse, Dinner Invitation, Event Invitation and
Total Invitees.

For each record there is a Field: Total Invitees with a numeric value given
for the number of people in each family to be invited.  A single person is 1,
a married couple is 2.  (Children are given their own records, so there will
be no value higher than 2)

My question is this:  How may I SUM total the numeric value in the Field:
Total Invitees and display it in a header or footer?

If this is too difficult a path, I am open to suggestions.