Multiple Tables -add, edit, delete

Hello all. Hope you are doing well. I would like some guidance here, meat of problem is in all caps: tblContacts -basic contact information on companies/non-government organizations/media outlets... tblCountriesOfOperation (tblContactsID, CountryID) -countries that tblContacts operate in. tblIndustrySectorsOfOperation (tblContactsID, IndustryID) - Industry sectors that tblContacts operate in. Would like a form to edit records. Problem: How do I display all the tblCountriesOfOperation for one tblContacts record SO THAT MULTIPLE COUNTRIES CAN BE ADDED OR DELETED FOR THAT RECORD? Same for tblIndustrySectorsOfOperation. I assume that I have to output the list of Countries of Operation in a loop then loop back through it after use has made changes to see what records have been changed. Or I guess I could present a dropdown of all remaining possible countries, after they click the data is refreshed and they are given the option of adding another country. Recommendations, sample code, general help all apreciated. thanks in advance, Paul