It depends on what type of group hookup you are looking to create. Generally, it takes at least three members to make a successful group hookup – but it could be more, depending on the size and purpose of your group. If you are aiming for an intimate gathering with friends or family, then three people might suffice; however, if you’re trying to arrange an online meet up with strangers from around the world, then five or more participants may be best. Ultimately, finding the right number of members for your group hookup will depend on your preferences and goals.