Contact List & Date Availability Calendar


I am trying to organize a contact list for an upcoming event. I have a large number of people to coordinate. I have a basic spreadsheet for Name, Contact info, etc. but what I’d like to do is create an “Availability” option where they can fill out their availability so I can schedule them properly. Either by filling out a linked form, or by telling me their dates and I can input them directly into the fields. I have tried various combinations of dates and multi-select options, but nothing seems to be working right. I just end up with a Calendar View that has Dates on the Dates. Then when I add things in on the calendar view, it duplicates the content. I want to be able to link to the other table for each Person. Can anybody help me?