Question : Count records in subform meeting criteria

I have a main form, with a sub form, linked by ClientID. I would like to have a text box in the subform to display the count of records within the subform that meet one criterion.

Main form - Clients, PK ID
Subform - Appointments, PK AppointmentID, FK ClientID

I would like the text box to show count of AppointmentID where Attendance = "Attended".

Answer : Count records in subform meeting criteria

In the subform put in a control in th form header or footer called txtCOUNT with a control source of =SUM(IIF(Attendance = "Attended",1,0))

Then in your main form create another textbox with a controlsource of =[SubformControlName].Form!txtCOUNT

Cheers, Andrew