If you want a long, sustained note, you could notate it in quite a few different ways. Below are some suggestions. Not all will actually save you time, by cutting notation, though! Each of these is only five bars long, so, obviously, you would only get any time benefit from using these techniques with longer notes.
BTW, I haven't used Noteworthy Composer before, so have no idea if they would work with that software. I used Sibelius7 for these, and all played back exactly the same (apart from the second line), i.e. with one sustained note per bar.
- Standard Notation.
- Similar notation using ties into rests; even though this doesn't require notes to be written, it would actually take more time to put in as the placement of the ties is fiddly. For instruments where the sound decays (eg. piano, guitar) you would usually use l.v. too.
- Using repeat-bar marks can save a lot of time.
- This notation is effectively the same, and plays back the same, but is less clear; it's not clear whether you attack the second note…
- And of course, if in doubt, use text to make the intention clear in the score.
With this answer I've tried to show different kinds of notation for sustained notes that would be valid within a score. Not all of them would save time if all you actually want is to hear the music (or to create a MIDI file of it, for instance). If all you want is to create a long held pitch, as quickly and easily as possible, the notation below will create the necessary effect (well, again, it works in Sibelius7, but might not in other software). But it is certainly not correct notation!