I have assigned PgUp and PgDn for Previous Marker and Next Marker [I have PgUp and PgDn keys side by side at the corner of the keyboard]
 
How can I assign say Alt-PgUp to [Previous Marker+1 Bar back+1bar Back] ?  Can I combine multiple shortcuts into one?
 
I want to use it for while recording to go back 2 bars from the marker. [I don't want to put another marker there]
Thanks
SG

You'll need some kind of third-party macro tool that lets you assign multiple actions to one key. I'm sorry I can't remember the name of the software, but I'm sure the use of macro key software is discussed here already on the forum, so please do a search. 
 
Using this tool, you'll need to create an action assigned to ALT+PgUp that does the following: 
- Previous Marker
- Previous Measure
- Previous Measure
 
 
*update*
I believe it's this one https://www.autohotkey.com/
 http://forum.cakewalk.com/AutoHotKey-Great-Sonar-helper-m3026412.aspx
 
 

Wow!!
Thank you very much. I will download and try.