Table type field
A table type field would have the ability for a member to have a single field for say phone numbers where each row would have a phone column, a type column and a use sequence/preference column
This would enable other users or administrators to contact the member at their preferred number
Sorry, it looks like we’re not going to do this in a way you proposed. As a workaround, you can create several phone fields (like “Main” and “Secondary”) and ask people to fill them in accordingly.