Does anyone have documentation on "Fluid" Voucher Approvals/workflow in PS v 9.2?

We are in the midst of upgrading from 9.1 to 9.2 (Go Live is mid-May).   Our AP Analysts currently use Approval Framework to manually submit vouchers into workflow where they insert Adhoc Approvers (one or more as needed) before performing the first approval.  Having a hard time getting this to work in the fluid 9.2 environment and am wondering if set-up is missing.

Any information specific to Payables and Voucher Approval in a fluid 9.2 environment would be greatly appreciated.

Thank you,

Kathy