Hi FM,<br><br>We cannot give you any indication of OpenLP's "level of deployment in the church market". OpenLP is open source, available on a wide range of platforms, and so we don't (and can't) track how many installations happen.<br><br>OpenLP on Linux is usually installed from the Linux distribution's repositories, so we have no insight there, and although we host the downloads for macOS and Windows, nothing is stopping someone from installing it multiple times on multiple computers from a single download.<br><br>It's a really bad indicator, but we do have over 3400 likes on our Facebook page.<br><br>OpenLP only supports a single display screen. If you wanted to do more than 1 display screen you'd need to mirror the display screen somehow (there are both software and hardware solutions out there to do that).<br>