The ability for me as an admin user is being able to see all my users' calendars in one place which helps out when I'm trying to figure out who's schedule conflicts are or what time of day it would be best that people get together at our office.
It takes some getting used too if you're not familiar but once you do its great! We've been using this software since we purchased the business so there isn't much else anyone could say about them other than they have continued to go above and beyond for us every single year without fail! The only thing i dislike sometimes has been their inability to integrate into Outlook like most other calendars does but thats probably just personal preference. If your looking for something simple yet highly customizable then look no further because Calendar Wiz can fit any need/needle perfectly!! Having everything under 1 roof really makes life easier for myself (as well as everyone) within work by letting employees know exactly.