Not sure what you mean by days of week being a variable, but you could use the WEEKDAY function and trap the days you want, i.e.
if weekday(dayToCheck) = 4 then workThisDay = 1
Each time the sheet is used, the valid days of week is entered by user. Need a formula to forecast next 100 DATES based on schedule, given a start date.
It sounds like you already have some user input in mind. Does the user type in the text "Wednesday" in one specific cell, "Saturday" in another,...? Check a box? Enter a number in a cell?
The user will fill in a template with the start date and check a box for each weekday to be counted. checks or '1's doesn't matter for the example.: It sounds like you already have some user input in mind. Does the user type in the text "Wednesday" in one specific cell, "Saturday" in another,...? Check a box? Enter a number in a cell?