There is a function in NT8 that I really miss using your platform, the ability to copy and paste a drawing. Currently I have to draw a trend-line and then try and replicate it again. If there was function where you just could copy and paste the a trend-line, that would be great!
If you are using a Windows computer, you should be able to hold down the CTRL key and double-click on the drawing. This will make a duplicate of the drawing on the chart that you can drag to a new area.
If you are using a Mac you can hold down the Command key and double-click on the drawing. This will make a duplicate of the drawing on the chart that you can drag to a new area.