What are Suggested Groups?
Suggested Groups are Groups that are not fully defined yet e.g. Without a name or avatar. They are displayed under the Suggested Group tab.
Tap More… | Edit Profile, Groups & Contacts | Groups tab | Suggested Groups | Scroll through the list of <Suggest a name> until you see a group you wish to create.
Tap on them to edit and define them. To learn more about Groups, click here.