If you are installing it on a Challenger single-stage press for the charging stage using a Powder-through die, you'd probably be better off with a 'stand-alone' powder measure, like the Lee Perfect Powder Measure, or better yet, a Lyman which is manually operated.
The Pro Auto-Disk is good kit, but it works best with an auto-indexing press, like the Lee Turret or a progressive press.
IAE, yes, you will still have to set up the Auto-Disk with the spring-loaded lever, not the 'plain' lever that attaches to a shell plate with a chain.