To create/edit user types, Click on 'Hi' in the upper right hand corner of the account, then select 'Users' from the dropdown menu.
Click the 'Roles & Permissions' tab.
Here, you can either duplicate a current role and make adjustments as needed or create a brand new role from scratch.
To duplicate, find the role you would like to repurpose and click the 'More' button. Select 'Duplicate Role' from the dropdown. Uncheck and/or check the boxes next to the permissions you would like to assign to this role and give it a name, click 'Save'.
To create a new User Role, click the 'Add New User Role' button towards the right hand side of that page. Give it a name, select the items a user with this permission level will ultimately be able to see and/or do, click 'Save'.