You can enable Close Button on Ticket Creation to allow users to close a ticket via the original ticket embed that is sent. This can be enabled by going onto the panel

Parent.gg - Login

Once logged in, select your guild and select "Modify"

Please now click "Commands" and then click "Close Command" then click "Command Values"

You will find "SHOW CLOSE BUTTON ON TICKET CREATION EMBED" and "TICKET CREATION CLOSE BUTTON EMOJI"

If you set the top it enables it without an emoji, just a button. If you put an emoji for the bottom it will enable the ability to see an emoji on the button.