Case à cocher dynamique

There are a few different ways to create enabled fields. And they can be combined.

1.   Show/hide fields

2. Make fields ReadOnly

3. Change color of field to make it look inactive. 

These articles will help.  

https://www.pdfscripting.com/public/Hiding-and-Showing-Form-Fields.cfm

The same techniques discussed in the article can also be used to set the readonly field property. 

https://acrobatusers.com/tutorials/js_disabling_fields/

Here's some sample code for the "Evaluation" field: 

Placed in the MouseUp 

this.getField("CR2").readonly = (event.target.value == "Off");
this.getField("CR3").readonly = (event.target.value == "Off");

This code makes the CR fields readonly when the Evaluation field is unchecked.