Hi,
ok, just as a check can you do the following:
1: open unity ( close it if it currently open)
2: create a new project
3: install the playmaker package form the asset store
if you still don't see the playmaker menu
4: select the camera gameObject
5: in the top menu: select Component->Playmaker->PlayMakerFSM
6: select and expand the playmaker component added to the camera
7: click on the "edit" button and the playmaker editor will show up
NOW, I am aware this is definitely not the right way or any solution to your problem, you should have the playmaker menu available.
Are you on mac or windows? and which version of unity do you have?
Bye,
Jean