How do I add the social media icons to the sidebar, I still don't get it

[HongTEM]

I downloaded the extensions but don't know how to put it into the sidebar, is it something wrong with my method?

[HongTEM]

Nvm, found out you need to pin it before you can add it to the toolbar

[godcanonen]

Could you explain pls how to pin them?

[Godiesc]

Hi,
first, you pin the extensions from the 'extensions button' to the toolbar.

after that you can move that buttons to the left-sidebar using the customization mode