Beginner Chart question - how to draw a line corresponding to certain price level on /NQ chart

Hello, I am a new to the platform and really like what I see. Trying to trade futures as TOS platform is not suitable to what I want to do.
Have a relatively simple question - I want to draw lines corresponding to multiple price levels on /NQ or /MNQ chart. I found how to draw a line, however I do not see hot to change line properties which I would usually do in TOS.
Have another question on loading indicators, not sure if it should go to a separate topic?!
If I want to create a daily open level line on a chart, where should I put it, struggling on where to put parameter, can see only if put on WVAP, however, not a full line.
Thank you in advance for any help or suggestions,
Igor