How to set up boot time scanning?

I have Avast Home Edition and computer is XP Home Edition.

Is boot time scan available? If it is ,how do I set it up please. I have looked unsuccessfully for it so far.

Open the Simple User Interface (e.g. by rightclicking on the avast! blue tray icon and selecting “Start avast! Antivirus”), open its menu (e.g. by rightclicking on the window) and choose “Schedule Boot-Time scan…”.

Thanks to all. I now have a better understanding of how to navigate the program menu’s.