Making a Field Mandatory Only for Selected Smart Forms in Redwood VBS

We are trying to make a field mandatory only for two specific Smart Forms in Redwood VBS.

However, when we set this field as mandatory, it is becoming mandatory for all Smart Forms. We have tried applying form-based conditions within the form rules, but still, we are unable to restrict the mandatory requirement only to those two Smart Forms.

Can someone please advise how to make a field mandatory only for the selected Smart Forms in Redwood VBS, without impacting the other forms?