> This UI is similar to the one murdle, which supposedly allow to make deduce (e.g. if someone is not in room A or B, then it must be in room C). I need to think on how to improve it.
You can simply flip the hierarchy - the top-level headline should be the person, and the subheading should be the room. That would make exactly the example you give easier, as all the information is collected in one place. And you don’t risk filling in that the person is in two rooms at the same time.
You can simply flip the hierarchy - the top-level headline should be the person, and the subheading should be the room. That would make exactly the example you give easier, as all the information is collected in one place. And you don’t risk filling in that the person is in two rooms at the same time.