I have 177 Series Titles in Missing/Wanted that are over 10 months old, my question is dose NzbDrone keep looking for these series and try to download them and if it does how can I remove them from the list so that it doesn’t download them because I do not need them? Thanks
How it finds them is covered in the FAQ: https://github.com/NzbDrone/NzbDrone/wiki/FAQ#wiki-how-does-nzbdrone-find-episodes
You can unmonitor them if you do not want them to download, which can be done from the series details page, on the series. season or episode. You can also use the series editor to edit multiple series at once or Season Pass to alter many series and set the first monitored season. The episode details modal (popup) can also be used to unmonitor an episode.
The bookmark icon is used to toggle to monitored state, filled in is monitored, just the outline is unmonitored (ignored).
I was also just going to mention the bookmark Icon but @markus101 beat me to it 
Thanks all
What if we DO want these older episodes? Is there a way to set up NZB to search for them and download? Sorry if this is a stupid question.
How drone finds episodes is here: https://github.com/NzbDrone/NzbDrone/wiki/FAQ#wiki-how-does-nzbdrone-find-episodes You can search for episodes, but drone won’t search automatically, currently searching for all missing episodes is not supported.