Hi de049
You could use
TotalW: (IIf([Mom am]=W,1,0)+IIf([Mon pm]=W,1,0)+IIf([Tues pm]=W,1,0) and so on
I would build this up bit by bit - try it out with 2 periods, then with four etc.
However, it isn't a very elegant way of doing things ... having 12 fields to store the different...