How to run program from specific viewport (not how to move it there)

Is there a way to **run** a program from a specific viewport (monitor)? All explanations I found, were about **moving** a window after it has been created, which is not what I am trying to do. **Why**: I have two different size monitors, run ubuntu-gnome 16.04 and use stjerm (quake-like drop-down terminal) as a secondary terminal with a width set to 100%. If stjerm is initialized on the smaller monitor, the "100%" adjust to the bigger monitor just fine. If sjterm is initialized on the larger monitor, it overlaps on the adjacent monitor. When I run stjerm on login, it is started on my primary monitor, which is the bigger one. So I would need to do something like change the focus on the secondary monitor and afterwards start stjerm.