Can I take several pictures in quick succession with CyberLink YouCam?

Yes. To take a series of photos in quick succession using the burst feature, do this:

Go to Setting > Click on Capture & Snapshot Settings tab > Ensure that Burst snapshots number is set to more than 1.

The pictures will be displayed in the captured content area and saved into the capture folder on your computer specified in CyberLink YouCam Settings.