1. well; properly; suitably
よろしく手配してくれたまえ。Make the arrangements as you see fit.
2. best regards; please remember me; please treat me favorably (favourably); please take care of; please do
こっちの方はよろしく頼むよ。Please take care of this side.
3. just like ...; as though one were ...
as ...よろしく
4. by all means; of course
as よろしく…べし