Difference in Roles:
Administrator: Will have access to everything with exception of the billing area.
Standard User: Will only have access to the application that they've been assigned to.
1. As the Company Owner, you'll have permissions to go into 'Settings' > 'Members' > 'Edit User'
2. When you click 'Edit User' you'll be brought up to the user page where you can select what type of role you want the user to have:
