Hi Noel96,

Like yourself, I am converting from BIAB for Windows to BIAB 2011 for Mac and discovered the same problem. After a little trial and error I found that many of the settings, including 'endings', have been moved rather discretely into the Title Box or Window. If you click within the Title Box, you will bring up another window containing a button that says "More". When you click on that you will find everything you are looking for to create endings.

I hope this helps.
BobS3