Use Two Ranges In Networkday Function?

I have used the Networkday Function to get the Working Days in a month excluding the Saturdays and Sundays and also the Holidays as Networkday Function by default excludes the Sat/Sun and any of Regional Holidays. This works absolutely fine, howevr in the realistic scenarion we need to also add any leaves allotted to an employee.

Now if this List of Holidays is entered in a seperate column, how can this be consolidated to get the actual Working Days = Total Days in a Month - ( Sat/Sun + Regional Holidays) - Leaves ). In the below syntax, the range $I$2:$I$4 contains the Regional Holidays and can be defined as a Name= Holidays

NETWORKDAYS(B2,C2,$I$2:$I$4)

NETWORKDAYS(Startdate,EndDate,Holidays)

Can we incorporate something like a double range like this : Leaves without writing it below the Holiday Range, this new Range by using Offset function can be made into a Dynamic Range. < =NETWORKDAYS(Startdate,EndDate,Holidays & Leaves)>