Yes! You can keep the steps manually deployed by putting them into cleaning mode. To put them into cleaning mode, simply open the door so the steps deploy. Once deployed, stand on top of the boards and close the doors. The steps will briefly attempt to retract, but once they feel the weight of you on the board it will recognize that and the boards will go into cleaning mode. Once in cleaning mode, the boards will stay deployed until the doors are open and closed again.
Please note, the procedure noted above is the only way to keep the boards manually deployed.