XF 2.1 How to Create a BbCode Text button

[markoroots]

Hi everyone, I'm searching all over but without to found a solution, a way to create a simple bbcode for the postbit, to make add a button with a written choose (for example "Click Here") where an user can use it to add a link, that can be added from the bbcode icons in the postbit, named for example "Click here button".
Something like this: https://xenforo.com/community/resources/bb-button-code.706/

But this seems to be for the XF1.

Have you some idea?

Thanks in advance