I have created a demo of a dashboard using GG Plot to create a candlesticks graph which can be panned and zoomed and displays trade positions which run off screen. The code and details on how to set up the demo can be found here: https://github.com/lmills2/ggplot_candlesticks
You can also plot financial data with Dashboards Financial Charts component, with a range of chart types (candlestick, OHLC, line) 30 technical indicators and custom notes and overlays. Users can then save their chart for sharing with colleagues.
For more information, including an explanation on the different indicators, check out code.kx.com.