It's not currently possible to place the same field on multiple forms in an Ideas Advanced Layout flow. Based on a category selection on the first form, I'm wanting to route to a custom form where the Description field would be within the context of the other fields that are unique to that form. Creating multiple Description fields would be cumbersome when reviewing ideas. Placing the Description once upfront or at the end would be challenging to the users to separate their inputs between the Description and other fields.