Thanks a lot for the response!
Well, for example, if I play a YouTube video during a Zoom meeting (me being the host of the meeting) there is a choice that allows me to "share the computer sound" which means that participants will be hearing the sound that comes from the YouTube video "internally" and not via my microphone, through which they hear, for example, my voice, when I talk to them.
However, it doesn't seem possible to do the same with the sound that comes from Studio One when I playback, for example, a song that I'm working on. The participants hear the sound that comes from Studio One the same way they hear the sound of my voice, when I talk to them, that is "externally", via my microphone.
Is it more clear now?