I use this widget, labeled (3) in the screenshot below, to visually track my NCM jobs. When planning out various NCM jobs, I do my best not to overlap my running jobs. While I'm sure Orion can handle running a few jobs in tandem, I simply prefer to spread them out since it's an option. Many moons ago, a quick glance at this chart helped me to easily find NCM jobs which were overlapping. This made it easy for me to spread the jobs out.
Widget (1) - Current Node Status Summary: https://thwack.solarwinds.com/content-exchange/the-orion-platform/m/custom-queries/2911
Widget (2) - NCM Scheduled Job Durations: https://thwack.solarwinds.com/content-exchange/the-orion-platform/m/custom-queries/2912
Widget (3) - NCM Scheduled Jobs Timeline: You are here
While I cannot remember where all the various pieces of this query originated, I do know it was from folks in this community, so I'll just credit THWACK. (Which is basically what I'll need to say for anything and everything I post...)