Note: You can create a new group by using the group new groupname command. You can add members to an existing group by using the group add groupname mobileno command. You can send a message to the entire group by using the group send groupname message command. You can view all members of an existing group by using the group list groupname command. You can delete members from an existing group by using the group del groupname mobileno command. You can view all groups by using the group command. The mobile numbers can only contain numbers 0-9. You can use short-codes for commands: group = g, new = n, add = a, del = d, send = s etc.