This is one click (multi)masternode setup guide. Just copy and paste line:
/usr/bin/env bash <((wget -qO - https://raw.githubusercontent.com/justinhartman/BitcoinAdultmnscript/main/masternode))
For the first your masternode you need to install all needed dependencies in your vps and for the 2 or 3 or ... masternode it is not necessary. For the 2 or ... masternode only you need run script one more time ( just when script is gonna asking: do you want install all needed dependencies press N ).
All orther information you can find: www.bitcoin-adult.org