For Drawing Trend Lines,what i used to do earlier (now it is coded hence it comes automatically):=
People using MS:
Take Gran Grid from the tools bar,identify a Major Pivotal High or Low in the past.
Right click on the Grid now placed on chart,put the date ,time & start value in the box,tick snap to price box,leave the Rise & Run parameters as default,do not tinker with it initially.
Now take trendline pencil from tools bar trace those lines which have touched most number of points in the chart,draw 2 to 3 such lines,over the grid's line.
Delete the Grid now,so that only the TLines traced by us are on the chart,now right click on those lines & in the box 3rd from last select 'Create Parallel Line'.
Bingo you will find the new lines almost touched multiple points in the chart,then we can be sure ,basing on past data that these lines are correct.
Use this TLines for your Analysis.