At somebody's discretion phrase
The freedom to decide to do something at your own will
You want to deal with this matter is at your discretion.
The boss gave Tom the permission to do the job at his own discretion.
Daughter: So I really want all my friends to have a great time. I was thinking it would be a good idea to have some candy out on the tables for people to snack on.
Mother: Well, if you want them to really enjoy themselves, candy is dandy but liquor is quicker.