To add an app in the dock of Pear OS 8, all you gotta do is open that app and in the dock bar you will have to right click the app icon then hit "Keep In Dock". Your app will be kept in the dock
pear os
Pear OS 8 running hot fan overheat fix
If you notice that Pear OS 8 beta 3 RC is making your laptop desktop run hot, then you will need to update your graphics drivers. Something about the drivers that come with Pear OS or lack of drivers