Sentence examples for for the group from inspiring English sources

"for the group" is a correct and usable phrase in written English.
It can be used as an adverbial phrase to indicate that something is done or intended for the benefit or interest of a group of people. Example: "We organized a charity event for the group." This sentence means that the charity event was planned and executed for the benefit of the group of people involved. "Please prepare a presentation for the group." This sentence means that the presentation is meant to be given to or shared with a group of people.