With Metro Full you can add pan and volume in the Mixer window.
Click record in the top left corner and hit play in the transport window to start the track going.
You can then adjust the mixer pan knobs and volume faders or you can adjust the controls inside the particular virtual instrument (VSTi's capable of automation).
The results can be seen in the graphic editor as suggested by Jerm.
In a midi track with a VSTi, where the popup NOTES, DRUMS etc is....you can find an option at the bottom for the VSTi itself. Going to that you can see all the parameters that can be automated. The ones you have fiddled with have a * next to them.