This grammar point indicates that an action is not necessary or that it's permissible to not do something. It means 'you don't have to do...' or 'it's okay not to do...'. Connect it to the negative te-form of verbs (V-なくても).

何かをする必要がないことや、しなくても良いことを表します。動詞の「〜なくても」に接続します。