Yeah creating a way to view what's on the other side of the door is a good idea. Tell Tenor and Alto it's probably fine. Whoever's here appears to be ringing the doorbell, and they wouldnt do that unless they are polite.
Edit: ok so that's an empty space not a door. No problem, just >Create a door there. Warn Alto and Tenor first, and it wouldnt be good to scare them, so make it a nice door, polished metal with colorful patterns on it. It should come with a lock that Tenor and Alto can use, but start off unlocked, because I think locking off their only apparent route out of this room would paint a bad picture, even if they dont necessarily want to leave right now. Then, create the view panel that let's them see onto the other side of it.
Edit: ok so that's an empty space not a door. No problem, just >Create a door there. Warn Alto and Tenor first, and it wouldnt be good to scare them, so make it a nice door, polished metal with colorful patterns on it. It should come with a lock that Tenor and Alto can use, but start off unlocked, because I think locking off their only apparent route out of this room would paint a bad picture, even if they dont necessarily want to leave right now. Then, create the view panel that let's them see onto the other side of it.
Oh right we have signatures