When you create a customised group, you can set it as “public” or “private”. In “public” mode, your group will be visible to the whole network, so your friends and family can find it through the functions on the platform.
In “private” mode, the group is not visible on the network, and your friends and family can find it only if they are invited by the Admin through a link. If you chose the “private” mode, it is permanent and cannot be changed.