How to circular array bones?

So I was wondering on making a squid with tentacles, but not sure how to place each bone evenly in a circle path.

Im a bit new to rigging so I apologize if this sounds really basic, but I really couldn’t find any information on how to achieve this.

Hi, you can just duplicate and rotate in pairs:

I am not surprised. Requests are often about circular array for modeling.
And people will redirect to recent tools for that.

But, in Armature Edit mode, only old basic tools are available.
So, you have to use 3D Cursor as pivot of transformation.

Then, duplicate the selected bone with Shift D shortcut. At that moment, copy of bone is moved by a mouse movement. Press R to rotate it, instead. And then confirm rotation by a left lick.
That step is first duplication ; that you just have to repeat by pressing Shift R for the rest of the array.