Multiple If statements and issues with nesting. Help please?

[MaceL205]

=IF(WEEKDAY('WEEK 37'!M3,2)=1,WORKDAY('WEEK 37'!N3+4,0),IF(WEEKDAY('WEEK 37'!M3,2)=2,WORKDAY('WEEK 37'!N3+3,0)),IF(WEEKDAY('WEEK 37'!M3,2)=3,WORKDAY('WEEK 37'!N3+2,0)),IF(WEEKDAY('WEEK 37'!M3,2)=4,WORKDAY('WEEK 37'!N3+2,0)),IF(WEEKDAY('WEEK 37'!M3,2)=5,WORKDAY('WEEK 37'!N3+1,0)))

So I want the formula to work out what date certain tasks can be completed. Say I have a task that can only be completed on a certain day such as a friday. Now based off of another tab which takes into account Leadtimes based on operation, I've also managed to make the sheet quantify my max output and plan when tasks need to begin and even to end up giving me a simple output plan based on the capacities involved. What I'm trying to acheive is that one of the operations can only be completed on mondays wednesday's or fridays. so rather than have to manually enter this data in on each weekly plan, I want a formula to be able to work out which date it can be worked on through that operation.

is there a way to do this at all? the above formula gives me errors due to too many arguments.

Thanks

 

[Oeldere]

Make a table with the criteria

After that use a Vlookup to find the data.