Even if u open 10 symbols, what is the use ? You can view only 1 or 2 symbols at a time on your regular monitor.
But if u still want to open 10 chart windows and tab in between them, first you must have adequate hardware to support it without hanging.
zerodha or any other trading software are primarily for trading and not for charting. Better go for a charting software like Amibroker or any web based charting application..