Automatic tick size calculator for stop loss based on % before placing a trade

Please add an automatic tick size calculator for Risk (stop loss) based on equity % before placing a trade (limit or stop order).

E.g. with a hot key ‘s’ as stop loss.

If I press ‘s’, and hover the mouse cursor on the chart, and click on a price level, it will draw a horizontal line and calculate a predetermine stop loss set as risk % (e.g. 0.25% risk) from the current price.