The categories in which tickets live
To access these settings:
Head to your Dashboard Select your server Go to the Panel Configs Tab Under General, click on Category Options
Select a category for tickets belonging to this panel to be created on.
Likewise to the previous setting, pick a category for tickets to be moved when closed, leave this option empty if you want the tickets to stay in the same category they were created on, if any. Note that if you have disabled the Two Step Ticket feature, tickets will be directly deleted instead of moved to the assigned category here.
Discord only allows to stack up to 50 channels per category, meaning that if you have already 50 tickets in one category, the bot won't be able to place a ticket in that category, for such reason Ticket Tool counts with overflow categories, meaning that if your main category is filled, the bot will go ahead and place the ticket on the next one available, simply choose a second category in the category pickers:
Make sure to always save changes using the pop-up shown whenever a change is done.