Yes you can !!
If you do not have more than one email address sorry you will be restricted to one entry only.
PLEASE NOTE: You can be a member of more than one group, you will need to apply to each group owner to become a member once you have been accepted your entry/picks will automatically apply to all of the groups you are a member of.
You cannot make alternate selections in each of these groups, once again you must have an alternate username to use this option.