Trying to set up a Relational database and two fields for drop-downs

For two days now, I have been trying to set up a relational database. I have two tables and two forms created, but I cannot change or delete the index on the ID field. I am at a complete loss and need some help with this. In addition, I am not able to create two drop-down lists, each with a choice of Yes or No. In the control properties, the field of “List Entries” is greyed out. I could send the 2 Tables and Forms so that you could figure out how I messed this up.