PCT has a neat feature > Check Return > Find the form you want > find the line or box you want to do entry for > CLICK the line or box and it will generally jump to input.

If you don't see where it entered hit the space bar and that will often add a check mark where it landed. Hit space bar again to remove it is not exactly where you want to be. In this case the box is for Initial return (which is probably true) and right above it is Corporation is electing...

Have you completed the 2553?