He delighted people with his charm and 'ease' of manner. [=his relaxed and easy manner]
The students might respond better if the teacher 'eased up on' them a little.
These features can be modified 'with the greatest of ease'. [=very easily]
(..) Don't ever mention money to me, you son of a bitch! Not in this office... ...not anywhere. Get in here, now! I just wanted to put you at ease, that's all. Solitary. A month. What's wrong with you? Get him out of here. This is my chance to get out! (..)1994 The Shawshank Redemption