Currently Being ModeratedNov 21, 2012 3:32 PM (in response to mark2542)
You have probably the "Primary Only" flag enabled. Deselect it (Edit > Primary Only).
See this user tip:
Currently Being ModeratedNov 22, 2012 2:42 AM (in response to mark2542)
You are welcome.
Funny, for me "Primary only" will be shown in the help menu, when I search for it.
Also, the "primary only" button - the framed "1" should be always available:
For the next, who may stumble on this thread and needs to find the option:
LéonieMacBook Pro, OS X Mountain Lion, 2.4 GHz I.Core i7, 16GB RAM, 500GB