1.To automate clips you must first add a clip and then double click it to open the clip editor.
2.Then turn on the Warp button.
3.Click the envelope box "hide/show" button.
4.Within the envelope box their is a menu that you can choose either clip automation,mixer automation or automation from any effects you may have added to the track. Then right below it (image below) their is a menu that allows you to choose what kind of automation you want to draw it ( I.E. panning,volume,transpose etc). Pick the one you want.
5.In the waveform right click (or CTRL click if on Windows) and choose a grid value and then choose Draw mode.
You should now be able to draw in the automation you want by clicking on the waveform and inserting automation nodes.