You only need the "Helpdeskanfrage" or QuickCall in case of beeing able to submit some of the user's system configuration.
Normally any mail sent to the helpdesk will be transformed into a new ticket by the supporter.
If you want to use the Helpdeskanfrage, you can copy the form to the mail template and let the designer task do its job.
Or , alternatively, you cam create a new database on the server called forms.ntf and copy the form to the design of this database.
When the user now clicks "Create - Other" , he will see the form Helpdeskanfrage w/o any update or modification of the mailfile itself.