Is it possible to use the price marker line to enter the Stop Loss and Take Profit values, so that we do not have to manually type in the values in the boxes?

This is not in the User's Guide and I have tried many things but as I could recall sometimes I got it worked but most of the times it does not. Could not remember what I did to get it to work though.

Thank you.

In the framework of the contests it is impossible because the SL/TPs cannot be created separately from the main order/position.

In a regular platform the full functionality of orders creation is available directly from the chart.