<Custom Forms> Ability to Disable 'Select All' for Checkbox fields

[#1]

At present it is not possible to disable the 'Select All' function for checkbox fields. It would be very useful to be able to deselect/disable this functionality for each checkbox field in the Admin layer of the form builder.

[#2]

Yes! This should absolutely be a setting we can turn off -- preferably on a case-by-case basis for each checkbox field, and it is extremely frustrating that the preview feature in the custom form builder doesn't accurately reflect how a form will appear once it goes live.  

[#3]

I am in agreement that this is a nice enhancement. However there needs to be a button to deactivate this option.

[#4]

Agreed.  I was also surprised this wasn't available when I attempted to make the form update. 

[#5]

I agree that this should be optional. With the "select all" option sitting at the top, it has seemingly encourages people to select it versus going through the list.

[#6]

Also agree that this is a needed feature!