HSA Plan - how to transmit as direct deposit

Our benefit staff is implementing an HSA plan for the first time.  They have set it up as a plan type RS on the BN15 screen and have set up the relevant pre-tax deductions.  When working with our bank, they will only accept the HSA account deposits via an ACH Direct Deposit file.  How are others accomplishing this?  (We are on apps 9.0.1.5)