NOTE:
MMS uses a whitelist system.
Join the Discord server and link your Minecraft account to get
permission to join. The setup guide must be completed before
linking can be done. Here is a link to the
Discord server.
Download the client zip file from the Google Drive folder.
Download and install ATLauncher from the official website.
Open ATLauncher.
Click "Instances" on the right hand side.
At the top left of the screen, click import.
Select browse, then navigate to where the downloaded zip file is, and import it.
It is recommended to
change the name to "MMS AT-" immediately followed by
the version of the zip file you downloaded
(for example:"MMS-AT-2.1").
Once the import is complete, click on the Accounts tab and log into your Minecraft account if you haven't already done so.
Run the instance by pressing play and add the server's address in the "Mutiplayer" menu if it isn’t already added (mentioned above).