Hello
then lets try this we have two tables where check lists and check list items are stored .
1) Check list - where your check list can be created manually .
back end name -checklist.LIST
2) Checklist Item - where check list items are stored
back end name :checklist_item.LIST
So you can write an after insert BR on hr case table and get the category through script and check if its category A insert a record in checklist table and under that record again insert check list items through script with exact mappings .
Main thing is you need to map document ID field which stores the HR case sys_id.If you try to map it then automatically the check list will be inserted
sample script
var gr= new GlideRecord('checklist');
gr.initialize();
gr.document=current.sys_id;
gr.owner =gs.getUserID();
gr.table="sn_hr_core_case";
var checkid = gr.insert();
var arr=['test1' ,'test2']; // store your check list item names
var orderCount=0;
for(var i=0; i<arr.length; i++)
{
var chck = new GlideRecord('checklist_item');
chck.initialize();
chck.checklist=checkid;
chck.name=arr[i];
chck.order=orderCount++;
chck.insert();
}
Not sure if it will work but worth giving a try .
Please mark my answer correct if it helps you
