Just to add on, if you want the size of the terminal to be larger than the default, add the "geometry=##x##"


alltray -x -st -g +554+62  "gnome-terminal --window-with-profile=tterm --geometry=79x38"
The previous cod will cause the terminal to be to the right of the screen, with a height to fill the desktop.

Excellent tutorial 23! Been looking for this for awhile!