I've taken the liberty of creating a question for your response to this article (https://solutions.teamdynamix.com/TDClient/KB/ArticleDet?ID=2052
So when you are in TDNext, you will click on the
Applications menu (option circled in screen shot below). Then, click on your ticketing application from the menu (underlined "Tickets" in screen shot below).
From your Ticketing application, you'll see a secondary menu bar (in red brackets in below screen shot). There should be a "+New" button to allow for creation of tickets or other options. You'll select the "Ticket Template" option from the +New submenu (underlined in screen shot below).
Then you will be able to create a ticket template as needed. Please let me know if these steps make sense or if you have any questions.
The default permissions for having access to TDNext and to a Ticketing application should allow you to create Ticket Templates.
If you go to the location I've mentioned and do not have that option in the "+New" submenu, please attach a screen shot of that page and menu to this question. This question can be responded to by clicking the "Contribute an answer" button at the bottom of this Question thread.