We've just set up Citoid on the English Wiktionary (Wiktionary:Votes/2020-09/Install_Citoid), everything works but the "Cite" button is hidden 2 levels deep inside the "Insert" dropdown, so the feature is not very discoverable.
It looks like this needs to be enabled for each Wiki separately (I found this via T133725, which requested the opposite), would it be possible to move the button to the main toolbar for the English Wiktionary? Citations are a basic part of the workflow there.