Add row only if not null

People who join a non-profit tennis club have the option of paying for a family membership, in which case they input the names of their family members who are covered by their membership fee too. I need a way to make it so Tablesome ONLY adds a new row to a table upon Forminator form submission if a certain field is NOT blank. I made this suggestion a few years ago and haven’t heard anything. As soon as this feature is available, my organization will be another $49 per year. Until then, Tablesome is of zero use to us because we either have to completely omit all of the family members of those who join, or if we include them, those who join with a Single membership (no family members) end up producing tons of blank rows in the table, which creates an impractical cumbersome job for the membership chair who has to constantly delete blank rows in the table.