When you setup Insightly you're given a private website that Insightly will associate with you or your organization. Everyone within your Google Apps domain can access your Insightly website. Each user has their own login, but all users share the same website. This is the same as the other Google properties like Google sites or Google Docs. Insightly has very easy to configure permissions for things like notes, emails, and files, so you can share important data with other team members.