Support Department Priority Edit?

[ssoylu1996]

On my whmcs when someone wants to open a ticket there are 3 priorities, "High, Medium, Low" however i want to add more priorities and i found this in the documents of WHMCS.com (http://docs.whmcs.com/Support_Tickets)

 

Options

 

The options tab allows the attributes of the ticket to be modified. The department, subject, status and priority can all be changed.

Sometimes it may be useful for additional people to receive copies of the email messages in this ticket, to achieve that enter their email addresses in the CC Recepients field. Multiple recipients can be entered in a comma separated list eg. jeff@example.com,bob@example.com

To change the client a ticket is assigned to adjust the Client ID value. If the client's name, company or email address is known start typing this into the field, an ajax list of the search results will appear. Click the appropriate client from the list to automatically fill in their Client ID.

Two tickets can be merged together into one, the messages from both tickets will be arranged chronologically. In the Merge Ticket field enter the Ticket ID of the ticket to be combined, the newer ticket is merged into the older ticket.

Flagging a ticket to another admin is useful if you want to bring the ticket to the attention of another staff member. Flagged tickets appear highlighted and emboldened to the staff member they are flagged to.

 

So what i did was go to Setup > Support > Support Departments > Click "Edit" department button, then i get a page with "Details" & "Custom Fields" tab. I would expect a tab saying "Options" or "Others" so I could modify this however i can't see any option.