[url=https://www.geogebra.org/groups]www.geogebra.org/groups[/url] represents an easy way to join existing Groups:

[b]Join[/b][br]Easily join an existing Group using the corresponding [i]Group Code[/i]. Just enter the [i]Group Code[/i] on [url=https://www.geogebra.org/groups]www.geogebra.org/groups[/url] and click [i]Join[/i] in order to directly access the corresponding Group page. [br][br][u]Note[/u]: The [i]Owner [/i]of a Group will provide the [i]Group Code[/i] for you.[br][br][br][b]Create Group[/b][br]Create your own Group and invite other users of the GeoGebra Community to become [i]Members [/i]of your Group. [br][br][br][b]Go to my Groups[/b][br]Log in to [url=https://www.geogebra.org/]GeoGebra[/url] to have access to all the Groups that you have joined or created yourself.[br][br][u]Note[/u]: You can also see your GeoGebra Groups on your [i]Profile Page[/i] on tab [i]Groups[/i].