1) ~ key to bring out the contract omnisearch.
2) Put whatever keywords you want in the searchbox separated by spaces.
nse eq icic
nifty jul fut
nifty opt ce 8500
opt bank nif aug
3) You can use up and down arrow keys to browse the entries you've added to the marketwatch. With an entry focused on, you can press:
B - buy
S - sell
D - toggle market depth (bids and offers)
C or Enter - chart
Del - delete the item
You can access Kite beta here: http://kite1.zerodha.com/