I just found the answer so I'll put it up here for everyone to see. Problem was I didn't finish after I installed Bumblebee, I forgot the terminal commands.
The command line programm optirun shipped with Bumblebee is your best friend for running applications on your Optimus NVIDIA card.
Test Bumblebee if it works with your Optimus system:
$ optirun glxgears -info
If it succeeds and the terminal you are running from mentions something about your NVIDIA - Optimus with Bumblebee is working!
$ optirun [options] application [application-parameters]
Start Windows applications with Optimus:
$ optirun wine windows application.exe
Use NVIDIA Settings with Optimus:
$ optirun -b none nvidia-settings -c :8
For a list of options for optirun view its manual page.
A new program is soon becoming the default choice because of better performance, namely primus. Currently you need to run this program separately (it does not accept options unlike optirun), but in the future it will be started by optirun. Usage:
$ primusrun glxgears