Multi department request form

I work on a technical support desk for a mobile phone company in the UK. We're currently trialling service desk plus for use as an internal helpdesk system. We have got it running exactly as we need it.

However things have changed and I have been told that the new system will have to accommodate our billing department. They also receive internal requests through an existing system.

The problem is Billing have their own requirements in the way of custom additional fields such as account numbers etc, and we have our own additional fields too.

The system we use at the moment first of all asks which department the request is for and then shows the corresponding request form. From what I can see Servicedesk plus only allows for one request form so all the additional fields from both departments would be displayed together.

This is the problem and I was wondering if I have missed something obvious or if there was a better way of doing what I'm trying to do with service desk

I have already created 2 groups and assigned the relevant technicians etc, the problem is customizing the original request screen.

I hope something can be done otherwise it's back to the drawing board.

Thanks