If you have a Checkboxes field, you can disable the field as a whole, which
will disable all the checkboxes in that field. However, currently, you can't
disable a checkbox in the field, while leaving other checkboxes in that
field enabled. Is this what you are looking for?
If so, I'm afraid that, currently, you will need to split that field into
multiple fields. I realize this is a workaround, but would it be feasible in