The syntax is wrong. IIF

X: IIf(Weekday([DueDate])=1, [DueDate]+1, [DueDate])

I think I got it
=IIF(Weekday([duedate])=1,[duedate]+1,IIF(Weekday([duedate])=7,[duedate]+1))

But now I need to add else [startdate]+3

I just cant quite get it

Expr2: IIf(Weekday([duedate])=1,[duedate]+1,else([startdate]+3)

that was not right because I did not define due date first, I think

so let's see I am trying to say my due date =my startdate +3 and iif my due date falls on a sunday +1

exp1:=([duedate]=[startdate]+3), and IIF((Weekday([duedate])=1,[duedate]+1)

Oh I am confusing myself

So right now you have if duedates weekday is 1, put duedate+1, else if duedates weekday is 7, put duedate+1

I'm assuming if it's 7 (Saturday) you would do +2? To land on monday.

IIF(WeekDay(DueDate)=1,DueDate+1,IIF(WeekDay(DueDate)=7,DueDate+2,DueDate))

Basically saying what you had, but if it's saturday add 2, and if it's not saturday or sunday, put the actual due date. That's probably the cleanest way to do it. You can just hide your duedate field how you have it currently than change Expr1 to RealDueDate: IIF statement

Or you can rename the duedate field (substituting in the new name into the IIF statement), and do
DueDate: IIF statement

So there is no was to make it so duedate is startdate+3
something like either of these
duedate=[startdate]+3 and IIF(Weekday([duedate])=1,[duedate]+1,IIF(Weekday([duedate])=7,[duedate]+1))

duedate=IIF(Weekday([duedate])=1,[duedate]+1,IIF(Weekday([duedate])=7,[duedate]+1)) else [startdate]+3

this does not work as I have written it of course.

I guess you can do something like this

DueDate: IIF(Weekday(StartDate)=4,StartDate+5,IIF(WeekDay(StartDate)=5,StartDate+4,StartDate+3))

Basically saying if the start date was Wednesday, the due date would be Saturday, add 5 to it to get to Monday. If the start date is Thursday, the due date would be Sunday, add 4 to it to get the Monday. Any other startdate just add 3 days to it.

I understand, thank you. Huge help.

I have a new one if the status is "Overdue" take the duedate-Date() and return the value.

Absolutely brilliant. Worked perfectly!! I hope I get this down.
DueDate: IIF(Weekday(StartDate)=4,StartDate+5,IIF(WeekDay(StartDate)=5,StartDate+4,StartDate+3))