Cant find manual anti virus scan

I just updated my product to the 6.2.1.5 version on my Windows 7 laptop.My question concerns the custom tasks.With my older version,when i clicked on the custom tasks tab i had an option to run numerous tasks individually that i wanted to,including anti virus.With this new version,all the different tasks are there EXCEPT the anti virus.

 

In the past i would be able to run the anti virus ONLY if i wanted to,but now i cant.

 

Why???