Can i put organization name ingame? just like clan.

Example : [AnimeUnited]Haybale

Or something like that

You can do whatever you want.

You can't have a clan tag that is an org tag, however, you can have anything you want in front of a clan tag, i.e TotallyNotABear[Obey]PlataBear

What if i dont have any clan?

then join one
but joining just because you want to get a tag is on of some awful reason to join a clan

I don't feel like joining a clan right now, maybe later.

Thanks for the information!

Do you have link to that rule?