How can I setup orchestration so that when release hold, trigger release pause in orchestration

Here is the use case:

We have setup an orchestration with a "PauseForReserve" Pause step, it is for external system to reserve by subinventory.

If the line is fully reserved, the external program will release the pause.

If the order is not fully reserved, the external program will apply a hold to the SO, user will review the SO for further action.

One of the possible action is user will continue to process the SO with partial allocated quantity.

In this case, user will manual release the hold, will would like the "release hold" action can auto trigger release the pause so that the whole order can proceed to next step (awaiting shipment)