Show Textfield if Checkbox is checked
I'm working on a project at my new work now and need help. Everything I need to know for now is if there is any possibility to show a Text Field, if a Checkbox is checked or not. So, I got 2 Fields (let's call them "Year Checkbox" declared as a Checkbox with 2 Entries and "Year Text" just there to enter a Text) and Year Text should pop up (maybe in a tiny window) if one of the two entries of Year Checkbox is checked. It is only possible to check 1 entry at the same time. Is there a way to do this?
Thankful for any kind of advise.