The major difference between admins, moderators and users of your Idea Drop platform is their authority to access and use certain platform features. Your admins, for example, have administrator privileges to add new users to the platform, post and edit Innovation Challenges, and track key trends and metrics from the dashboard.
Understanding the difference in permissions will help you to determine which individuals across your organisation should be admins, moderators or users. You can always update user roles at a later stage as you add more users, expand platform usage to other departments and locations, and as your innovation initiatives change and progress.