VSP comes with administrator installations for 4 computers. (Please note this is based on the number of computers, not number of people. Someone with two computers counts as two installations.) Additional computer installations can be purchased for a one time fee of $15 plus an additional $6 per month. You can also allow people to access the program as Web Admins. Web Admins will not be able to do everything that is available in the desktop software, but can make manual changes to schedules, add, delete, or edit volunteer profiles, send emails to volunteers, and more.

If you have the Standard edition, you can also allow people to access the program as Leaders. Leaders have different privileges than an administrator or Web Admin, but can do some manual scheduling and send emails to volunteers.

For more information on the difference between administrators, Web Admins, and Leaders, see this article: 

What is the difference between a Web Admin, a Leader and an administrator in VSP?