Using an IF statement within a measure

Hi all

I have been doing a bit of digging around on the forum to try and find a solution but can't seem to get this working.

I currently have two separate measures that are individually working:

• The first apportions the annual planned workload by month an applies a factor for months with down time.
• The second takes the fixed expected days and deducts the total from the first measure to calculate the non-working days.

I would like both of these to be displayed in a single matrix and think this needs to be combined into a single measure but can not get it working.

Data Structure

Plan Table

Employee ID

Activity

Days allocated

Staffing Table

Employee ID

Employee name

Start Date

End Date

FTE

Months Present (Calculated Column)

Current Measures

April = CALCULATE(
   SUMX('Staffing',((12/SUM('Staffing'[Months Present]))*0.065)*SUM('Plans'[Days])),
   FILTER('Plans','Plans'[Activity]<>"Leave"))

April Leave = 21.67 - 'Plans'[April]

Expected Outcome

Any help would be much appreciated.