You'll find the toolbar at the top of the main window, as shown here:
Wirecast currently offers four toolbar buttons for you to use:
Broadcast
The Broadcast button starts and/or stops the broadcast. If you have not configured the broadcast, the first time you press this button, you will see the Broadcast Settings window.
This button is independent of the Record Toolbar button -- you can turn broadcast on and off regardless of whether you are currently recording the broadcast.
Record
The Broadcast button starts and/or stops the broadcast. If you have not configured the broadcast, the first time you press this button, you will see the Broadcast Settings window.
This button is independent of the Broadcast Toolbar button -- you can turn Record on and off regardless of whether you are currently broadcasting.
Preview
Shows or hides the Preview area.
The Preview area shows what Live will be after you press the Go button.
The Preview is not very useful in Wirecast unless you turn off the AutoLive feature of Wirecast. Also see AutoLive Usage for more information on AutoLive.
When Preview is open it is on the left of and has a green "P" in the top-left of the preview.
Inspector
Opens the Inspector window.
The inspector is very similar to the editor window. The difference is that the Inspector will always show the last shot that was clicked on.