I need to find multiple asset items in a custom Service Desk field and take action

[Steve Y]

To simplify customer experience, we're allowing multiple selections from two custom fields (that map to two separate attributes in an authorizing document object). After issue creation, I'd like to automate the creation of a new issue (or sub-task) for each item in the custom field, and then removal of that item from the custom field. 

So, it would look like this:

Customer creates issue, selecting the authorizing document (Asset Object), and three items from class 1 (identified in attribute 1), and 2 items from class 2 (attribute 2). 

Automation recognizes items 1, 2, and 3 from class 1 request, creates new issues for items 2 and 3, then removes items 2 and 3 from the original request. 

Automation recognizes item 2 from class 2 request, creates new issue for item 2, then removes items 2 and 3 from the original request. 

It seems this should be possible, but I'm stuck. 

Thanks!