On 24 Dec 2020 at 10:18a, Adept pondered and said...
 
But, hopefully obviously, this is just my attempt at having _an_ answer for you. I do hope there are people who know something about jQuery that can help.
Thanks for the reply :)
I've made some progress and found this works to hide/show the divs I want to when a radio button is clicked.
         $(function () {
               $("input[name='PasswordChoice']").click(function () {
                         if ($("#globalPassword").is(":checked")) {
                                   $("#ChooseSpecific").hide();
                                   $("#ChooseGlobal").show();
                         } else {
                                   $("#ChooseGlobal").hide();
                                   $("#ChooseSpecific").show();
                         }
               });
         });
My next problem is trying to remove the 'required' element from inputs in a hidden div so the submission process runs smoothly. 
I've been testing the following and can't seem to get things to work :(
$('input').attr('required', false)
$('input[id="bbsAreaFix"]').removeAttr('required');
$(":input").removeAttr("required");
So yeah, one step forward and another back it seems ...
--- Mystic BBS v1.12 A46 2020/08/26 (Windows/32)
 * Origin: Agency BBS | Dunedin, New Zealand | agency.bbs.nz (21:1/101)