Forms :: Adding To Same Record With Several Forms

I'm creating a database that has a registration form for new employees, but depending on the skills each employee has, a separate "skills form" will open. (there's one main form and when they get to the skills part of registration the main form hides and the selected skills form opens).My problem is when the second form opens, Access adds that data onto the next line of the table, but I want it to continue adding to the record that the main form is using.

My thinking is there must be a way of retrieving the primary key from the first form and applying that to the second one, but I can't figure out how to do this even after spending most of yesterday playing with it .

My other option is to create another table just for skills and have it added straight there, but I'm not sure if that will just make more work for me later on when writing queries and such (plus I feel like that would be cheating).