How do you change request types and see the new form to fill out? (jira service desk)

[JJ]

User enters a ticket under Get IT Help in Service Desk which has two fields: summary and description.

They really should have categorized it under a different request type that has 7 fields (out of about 50 total possible).

I want to change the request type then click on view form and be able to fill see which 7 fields apply to that request type so I can fill them out (as opposed to the list of 50 that that screen has if I click 'edit' and view it).

How's this possible? Do we need a plug-in? This is a major flaw.