I am not finding an option in the rules to make other sub fields mandatory if the first sub field is not empty.

I am using the name field to collect parts info, with sub fields of Part Name, Part Number, and Quantity.

But I don't want these mandatory unless there is something entered in the Part Name.

I would split it into different fields, but without being able to have multiple columns this would look awful for the folks filling it out.

If I am missing something please let me know.