a question about long-pressed softkey topic

hi to all,
i have a question: if i slide my finger from lg logo (on the bottom of the smartphone) until the softkey home, some icons come out, and the icons are for search on google and take a quick memo. i'd like to know if i can add other apps or links into that semi-circle, like unlock menu of jb cyanogenmod.

sorry for bad english, and thanks for the attention

lorenzo