To see all the roles, navigate to 'Members' at a project level and select 'Manage roles'. On the 'Project roles' page you can see the standard roles provided by Artifakt. Click 'View role' to see further details about each of them.
The default role 'developer' is automatically used when you add new users to your project. You can change these settings on the project settings page.
To create a role, click on 'Create role' in the bottom right corner. Type a name for the role and check the relevant fields for the rights you want to give.
To save time, you can load / copy a role from the menu in the top right corner. It will then automatically check the associated boxes.
Be aware, columns are hierarchical: the right to 'create' automatically gives the right to 'view', the right to 'edit' gives the right to 'create', etc. The column 'All' gives all the rights related to the entity.