How to keep CheckBox checked on Visual studio (C#) when you go back from current form to a previous form (where the checkboxes are)?

I have three checkboxes in Form 1 and after checking them and clicking a button to go to Form 2, I can click a button to go back to Form 1 again, however the checkboxes are unchecked once I go back.

What are the codes/steps I have to do to keep it checked?

Thanks