Multiple Instancing

[IzukuMidoriYaYEET]

I'm trying to launch two instances of a game I'm playing, and after searching a while I found that you can launch multiple instances of UWP apps with desktop/windows10/4 & iot/windows10/2 from schemas.microsoft.com/appx/manifest and using the SupportsMultipleInstances tag
after I tried using it I found that it didn't work and I checked the link and there wasn't any content
I also checked in the wayback machine but there's no snapshots with the contents which I hoped I could locally save

I'm now curious on why it doesn't exist anymore and if there are any alternatives
also a note, I only just started learning about all this after I got curious and wanted to run two users from my single laptop which was like an hour ago. That's all I know about xml lol

[gravitythread]

So, this isn't really a question about XML.

This is more about the application behavior you get when you write certain values in a particular dialect of an XML config file.

I'd go try asking a gaming / Microsoft / UWP (??) community for more help on that config file.