If you are the host of an event, but would also like to respond so you can attend as a member, you can add yourself as a member to the group.
You can do this by going to the Members tab > Add.
Add yourself with your name and use the same contact details as your admin account.
If you then invite yourself to any new events, you'll be asked to reply as both host and member. You will be included on both the host list and the attendee list.