Here is a short guide on how to make multiple mn's work on the same VPS:
1. Create a new folder 2. Copy folder blocks (thats inside .helix) into that folder 3. Copy helixd and helix.conf into that new folder as well 4. Change rpcport(dont use 37415-37418) and masternode priv key 5. With the terminal go to that new folder and type "touch mnstart.sh" 6. Open mnstart.sh and type "./helixd -datadir=./" 7. Save mnstart.sh 8. go to the terminal again and type "./mnstart.sh"