Crew Rate Tables

I am building new crew rate tables and desire to create individual adders to each labor rate, currently I have 20 plus added columns that are driven from the base rate.  I am curious is there any way to download these columns of cost into the job cost code as separate items?  I am thinking the easiest way would be to allow each adder to be an extension of labor cost category type 1 (1.26 could be tech fee, 1.30 could be Carp. Union benefits, etc.).  How have others tracked the burden rate and separated the costs?  Thank you for your reply.