The Group Boxes can be accessed by clicking on the Inbox drop-down menu on the Messages screen; it's at the bottom of the drop-down. The menu box you have is tied to the level of access your user account has in the Admin section. If you're a provider or Mid-level you have the provider box, if you're a Nursing, you have the Nurses box, and if you're doing desk work, you have the Front Desk box. (I may be a little off on the names.)
I know of no way to remove the boxes, but if it's becoming a problem, remember that you can take the Inbox drop-down to Outbox to Retrieve the message you accidentally sent back into your Inbox.
Also, whenever you create a message you can just type the last initial of your staff until their name pops up so you don't have to use the drop down, and I believe, when using the Orders screen the last Nurse you used will automatically be selected.
