How to create a category from form response

[Ashley Fisher]

Hi

I am new to Jira Work Management and I need to be able to set a category based on user input from a form. 

The user will select from a dropdown for the question 'Business Area Impacted' and I want the answer to this to be duplicated as the category so I can group by Category.

Can anyone help with this as Category doesn't seem to be a field you can use in the automations?

Thanks

[Nic Brough -Adaptavist-]

A couple of places I know have tinkered with trying to proxy the portals, but they took the easy route and now just serve up simple redirect pages.  So when a user goes to http://ourcompany/helpme they land on a page that just says "have a line of javascript that directs you to the right portal page"