If I’m not a PlayStation Plus member but I log into a PS4 system owned by a PS Plus member, will I be able to play online multiplayer?
Yes. If you don’t have a PS Plus membership, you can still access online multiplayer modes if you log into a PS4 system which is set as “Primary” by a PS Plus member. This means that, for example, if one housemate is a PlayStation Plus member, everyone in the household will have access to online multiplayer. Additionally, on the same PS4 system, any games or content purchased by one user are available to other users who play on that console (unless that content has expired).
How many users can play online multiplayer modes on a single PS4 system set as “Primary” by a PS Plus member?
All users can play online multiplayer modes. Up to four users can log in simultaneously to a single PS4 system, and all will have access to multiplayer as long as the PS4 system is set as “Primary” by a PS Plus member.
How many local accounts does the PS4 system support?
The PS4 system supports up to 16 local accounts, in addition to temporary guest accounts.