Hi,
I create a small example for you.
Please download, unzip and install it (go to Breezingforms->Configuration->Package installer->chosse this xml file->and click on Install Package, after that you will see this form in Manage Forms with name: example1142022
If you click on Title1 you will see hint text, if you uncheck it text is hidden
To get this:
1) here I added one checkbox group defined like:
0;Title 1;value1
0;Title 2;value2
2) I added section in which I added text for hint.
Go to this section->Properties->Description->click on Edit and add text hint
Also, go to this section->Advanced->and turn off this section
3) if someone click on Title1 this section is on, and if this is unchecked section is off (this text hint).
4) for this go to form->Advanced->Visibility rules and add:
turn off section sectiontoshowhint if testcheckbox isnot value1
turn on section sectiontoshowhint if testcheckbox is value1
-sectiontoshowhint is name of section (not title), repalace it with yours
-testcheckbox is name of checkbox (not title), replace it with yours
-value1 is value of checkbox (replace it with yours)
I hope I explained it well
If you need more help, feel free to ask
Regards,
Tihana