I have not seen it done with incidents however I know you can do it with Service Requests as long as you know the Category ID. if you need it to be an incident you can create an Automator that when a service request matching (X) criteria is created to convert it to a Incident and use an api or app to fill in all the incident fields. We do something similar for change requests.
Your example below:
https://servicedesk.vetoncall.com/support/catalog/items?category_id={Insert category id here)
Hi.
The New ticket form only supports a few fields; Subject, if I recall correctly is one of them, but Cat and SubCat I guess are not, currently.
I think there are already Ideas about it, but I’m not sure.
Regards,
Thank you so much ITMike and Elvis. I will try the solutions given and advise what we ended up doing. Really appreciate your help.