First go to the map that has the Game Management Units on it. .Find the Game Management Units in the area you want to hunt.
As an example the Green River runs thru Units 201 and Unit 2. The Yampa is the dividing line it looks like between Units 2,3, and 11
Then go to the deer draw section of the Big Game Brochure that list Units , dates , sex , and hunt codes.
Unit 2, 2nd season,the hunt code is D-M-002-02-R for a buck tag
Unit 201 , 2nd season ,the hunt code is D-M-201-O2-R
Unit 3, D-M- 003-02-R
Unit 11, D-M-011-02-R.
Now go to the leftover license page and match those hunt codes to where there are left over tags.
Same with elk