Raskew, I really appreciate your help, but could you please explain that piece of a code a bit more? I'm currently using:
Available Days: DateDiffExclude2([Sickness]![Start Date],IIf(IsNull([Sickness].[End Date])=True,Date(),[Sickness].[End Date]),[«pexclude»])
[«pexclude»] should this input...