A group is initially established on the GrpTXT website.  Each group must have a unique group name.  Once established, members can be added to the group either manually (through the GrpTXT website) or by individuals sending a text message to the group.

A group administrator has full authority in respect of a group and can manually add or remove members of a group and edit the group options.  A group can have numerous administrators

A manager is a person who has been authorised by an administrator to send messages to members of a group.  A group can have numerous managers.

Members are the members of a group.  When a text is sent to a group, all members of that group will receive the message.  Members can join or leave a group simply by sending a text message to the group.