Each Group / Track consists of Subgroups / Events.
Subgroups are activities.

Each group can have a different number of subgroups (activities). This number is indicated by the corresponding number next to the Subgroups tab.

After registering, you automatically become a member of each Groups / Group.

However, to participate in a specific event within each group, you must join it. To do this, click the Join group button next to each event.

Groups that you have joined are designated You’re a Member. To unsubscribe from a group, click on the button with this symbol. Then, instead of the status, the Leave group button will appear in this place. By clicking it, you will unsubscribe from this event.

If other members have invited you to the group, it will be displayed with the Accept Invitation button.