I can not remember if Alt-drag comes as an installer or a zip. It can go anywhere and you can make a shortcut to the executable.
When you run it first time, it does make a config file, so you might need to do something like this to stop it auto-starting.
Is the Alt-Drag icon hidden? Can you click and get the icon as (1) If you can get that then a right click to bring up the menu (2) and maybe you have autostart enabled and need to disable it (3).
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