Autostart program in specific workspace

[deeplow]

With KDE it’s possible:

@unman

You can also use Activities - a way of making each desktop a separate
workspace, with its own wallpaper, widgets and launchers.
You can force windows from particular qubes to appear in distinct
activities. This helps to keep qubes separate as you want, and reduces
the risk of transferring data between the wrong qubes.

And also with XFCE (the default desktop environment). But I’m not sure how.