Maybe there is for MailStore (server) but as a volunteer I can only give you a provisional answer.
So far as I’m aware - Batch mode, CL and scripting are not officially supported for MailStore Home .
While not expressly forbidden, don’t expect direct support from MailStore Engineering.
You’re on your own with those kinds of operations.
I doubt that MSH can use multi-threading for concurrent multiple profile archiving.
You’ll just have to find a way to vary your script to include the now missing events ------------------
if they can be within MSH.
Sorry, I can’t help you with this - but this forum is user assisted,with occasional
help from MS Engineering.
Considering the COVID-19 situation, their efforts are concentrated towards paying customers…
PS - what may work is 3 separate portable “installations”…
They will run independently and simultaneously.
Not ideal but possible.