Once the automatic labels are showing, as in your screenshot, activate the label tool and select all the labels cmd/ctrl + A.
Now in the label settings you can change them to your desired settings.
A Tip is to then save your settings as a favorite.
Erika
Architect, Consultant
MacBook Pro Retina, 15-inch Yosemite 2.8 GHz Intel Core i7 16 GB 1600 MHz DDR3
Mac OSX 10.11.1
AC5-18
Onuma System
"Implementing Successful Building Information Modeling"