Leaving the skin on, disassemble the carcass(es) to to produce three groups 1) thighs/drumsticks, 2) boneless breast, and 3) everything else (including spine & neck). Either reserve the giblets for another use, or once you’re familiar with the recipe include them as you see fit. Personally I’d at least avoid the liver.
Separate the wings into tips, flats & drummies). If turkey, break the breast down into pieces sized roughly similar to a large chicken breast so they will cook at the right speed. Cut or pull the breast “tenderloin” tendon out.