Is it ok to have more than one account here?

[Nicoladen]

I tried searching for "server rules" etc. etc.

Didn't find an answer. I know you're not allowed to multibox here (/cry)
But are you allowed to have multiple accounts as long as you don't multibox (I say multibox, because ip can be hidden via vpn etc.)

In the case that you are allowed to have more than one account - Is it then ok to share account between friends?
(to take turns leveling it and using it to powerlevel other chars)