It is quick, easy and very easy to navigate. Negates the need to access old emails or scroll through my calendar looking for past dates or having to add how many days remain. It's great that we can add courtesy notes such as "apologies for the short notice but xyz has happened and i need to attend/be there etc. The reason for being absent dropdown is really useful. Adding Birthdays is a lovely Idea. Enables us to send a messages :) I book appointments for colleagues so having quick access to team members availability will also be very useful. In essence, it's so simple to use and to refer back to.