Both. Your staff will use the Windows interface exclusively, as it provides the vast majority of the software's functionality. Volunteers can use either the web or kiosk (touchscreen) interfaces to sign in and out, update their information, see their assignments, etc. VSys Web is entirely optional, but included with your license. VSys Live is an added module. Please discuss adding this feature with your Bespoke account representative.
Even though VSys is not primarily web-based, you as a staff member can still work with the program from home or remotely. Using a VPN and Citrix, Terminal Services, or Remote Desktop systems can make the application available to you anywhere in the world, and do so securely.