Even duplicating a panel on multiple monitors is not possible, at least for me this is basic multi monitor functionality.
Configure your panels as you like, change one monitor and the panels are gone. There's an issue open since 2021 about this problem : https://bugs.kde.org/show_bug.cgi?id=446654
I wrongly applied KDE terminology when talking about Windows.
I guess you could replicate your panel in the other monitor "by hand", or just duplicating the relevant entries and setting them up for the other monitor at plasmarc.
This works only temporarily, when connecting another monitor then the settings are not propagated.
[1] https://invent.kde.org/plasma/plasma-workspace/-/merge_reque...
[2] https://invent.kde.org/plasma/latte-dock/-/tree/work/plasma6...