Forum:How to add the babel extension to my wiki

Hi! I have a FANDOM account but in this computer idk why i cant login :( So how i can add the extension, like Wikipedia. This is an example:  will make automatic userboxes that say This user has a avanzated knowledge of spanish

Read Community Central:Babel ― 𝙋𝙖𝙧𝙠𝙤𝙪𝙧 ✨oh dear, I don't know if we know why we're here 17:37, 15 March 2021 (UTC)