Psn/square enix id

[Niwashi]

You could set up a PSN sub-account under your main PSN account. Those would qualify as "different" PSN accounts as far as the "one SE account per PSN account" rule goes. But you do then need to log into your PS3 or PS4 with the right one, so you'd be logging in and out of your PS3/PS4 whenever you want to switch between SE accounts.

[HEC]

You could set up a PSN sub-account under your main PSN account.

Why to do it such complicated way? Simply set up another "primary" PSN account instead ...