Progress by units in P5

The other way round.

Labour - productive work (especially physical work done for wages)

Thanks for your reply.
If we define BOQ as Non-Labor and Manhour as Labor resource then while updating progress by units P5 calculates by adding both units as
%completed = actaul (Labour+NonLbour) units/Budgeted(Labor+Nonlabour units)

Budgeted BOQ=4000 Sqft , Mhrs=250

Actual BOQ=2000 Sqft , Mhrs=100

Progress( by units ) calcuted by P5 is
(2000+100)/(2000+250)=49.41%

But actually BOQ is 2000/4000=50%

How can we update progress on BOQ Nonlabour resource units only and planned Labour Manohours units depending on BOQ.I want to update progress by BOQ .
Please advise.