I am creating a spreadsheet with several conditional formulas. They all work
except for one. I need the following:

IF S4 = YES and T4 = YES then W4 = YES else NO
OR
IF U4 = YES then W4 = YES else NO

I can get this part to work:
=IF(AND($S4="YES"|$T4="YES")|"YES"|"NO")
But I cannot put the OR in there.

Can you help?