Using two cells to control one

[Bradleeww]

Hello, I’m not sure this is possible, if it is please help. I’m trying to simulate a seal in circuit using excell logic. I would like to toggle the value of a cell (A1) true, based on a true value in another cell (A2). So far this is simple. Now, after cell (A2) toggles (A1) true, I want (A1) to ignore cell (A2) and stay true until (A3) toggles true, of course then I want (A1) to ignore (A3) until (A2) toggles true again. Any ideas?

Thanks
Brian