Cant add second course using CoursePress Pro


I'm trying to add second course in my website and getting this message:
"While CoursePress is suitable for offering a few courses, you may have bigger goals for your site. CoursePress Pro takes the features you love from CoursePress and unlocks the ability to create an unlimited number of courses. And get 12 payment gateways making it even easier to accept payments for your premium content".

I'm using trial account. Can you explain me how to create several courses?