how configure visual studio code for elixir intellisense

Hi guys, nice to meet you to the whole forum, I’m new here, I’m trying to configure visual studio code for elixir, right now the intellisense-autocomplete seems not working, I installed elixirLS inside vscode and also vscode-elixir (which seems use elixirsense) I don’t know if I need run a command line before, because seems that for elixirsense you need run a server before start coding, basically I just download the extensions inside vscode and also I compiled this and put the binaries inside my path

can you explain me a little bit how achieve intellisense inside vscode???..I need an extra step?

thank you so much guys, sorry for the super noob question