There is a saying, 'two heads are better than one', so imagine what can be achieved by working in a group on a presentation! Group presentations can offer challenging opportunities that are both rewarding and frustrating.
Here are some benefits:
Different people, different strengths, more skills, voices and presentation styles
Each person can take turns giving out handouts, and changing Power Point slides or audio-visual aids etc, while one concentrates on talking
Presentation tasks (introduction, questions etc) can be better managed
A group presentation works best when every member's individual strengths and weaknesses are acknowledged. In school or university, groups may be chosen on the basis of friendship. Later in work situations, people may find themselves part of a group with people who perform similar jobs or duties.