In the Tasks grid, click the to expand the desired Task record.
In the Material Kits grid, select the record(s) for which you want to populate units.
Click the Toolkit and select Populate Units | Selected Record(s). At least one Material Kits record must be selected for the toolkit to run. The following pop-up will appear:
Enter the Units of Material Kit Resource you expect to use on the PM Task (required).
Click OK. The toolkit overwrites the existing Units values in the corresponding fields in the selected Material Kit record(s).
How to populate Material Kits Units for selected record(s)
to expand the desired PM/Template record. 
and select Populate Units | Selected Record(s). At least one Material Kits record must be selected for the toolkit to run. The following pop-up will appear: