The easiest way to make a group presentation is to outline the presentation and then divide the topics,giving one to each group member.

Group Presentation

A presentation given by multiple individuals as a team, often in an academic or professional setting, to convey information or ideas collaboratively.

Outline

A general description or plan showing the essential features of something but without the detail.

Topics

Topics refer to the subjects or themes that are discussed or explored in a document, conversation, or area of study.