J-BusinessDirectory - Feature Request - additional fields needed

Many restaurants (the focus of the site I am building) rely on a number of services for which no provision has been made in the available fields.

These include Yelp (all businesses, not just restaurants), OpenTable, and a checklist of the usual parasitic delivery services (Grubhub, Uber Eats, etc., some of which have prompted some restaurants to operate separate takeout kitchens for these services). 

This is not a trivial consideration.

Custom fields doesnt work?

Is this a feature I can add to the Social Networks section? If so this is a new feature I haven't discovered. (which reminds me, I had hard-coded these fields into the v. 4.7.3 build that I now have to recreate - and hope I don't have to edit 250 records to work these fields back in.)

[edit - @ssnobben: I think the extra fields can and will work for the parasitic delivery services, but Yelp and Open Table need Social Networks fields and related icons. At least in the US, you are talking about pretty much every restaurant in the country.)