Cool, thank you! The UI I envisioned is that the website shows what people are doing and when. You can add activities (with a form like you descibed) - but the

Cool, thank you! The UI I envisioned is that the website shows what people are doing and when. You can add activities (with a form like you descibed) - but the key is that a site will show what's going on right now and for the rest of the day. And when people add to that site, notifications go out.