How to Split a 12 ft width roll into two 6 ft widths.

Cut a 12 x 5 and need to make it two cuts of 6 x 5.

Transfer 5 ft from the 12 ft roll to create a new roll 12 x 5

Edit the new roll SPLITROLL-A  from 12 ft to 6 ft width.

Transfer zero amount to a new roll from the existing 6 x 5 roll SPLITROLL-A to create a second roll.

Edit the new roll SPLITROLL-B by scrap and make 5ft available.

 Original roll SPLITROLL was 12 x 5 is currently 12 x 0.

New rolls created SPLITROLL-A is a 6 x 5 and roll SPLITROLL-B is a 6 x 5.