Hi, you can always create unlimited number of shares, share to unlimited number of people, and have unlimited concurrent logon from the Web or FileManager.
The Group Plan makes the whole group more manageable. Without a group account, all individual users are regular users, they manage their own account. The group account can let all group members share the same storage / bandwidth, this often saves a lot of money for small companies. Further, a group account is much more manageable and flexible than multiple invididual plans. The Group Account Owner (Admin) orders storage space, assign storage and bandwidth to sub-users. He can also create sub-accounts, or delete/edit/enable/disable sub-accounts. Sharing files among the group is also much easier than individual accounts.
So, group account is ideal for a group of people to share and collaborate on the web. It is designed for organization and small businesses. Business users can also share files with clients using our Group Account service. You can create a sub-account to your clients so they can upload files for you.
More interestingly, we have some consultants reselling our Group Account service to their customers. This is OK, and this makes sense.