Integration with LearnDash

Hii, I have used LearnDash on one my sites, and i want to block some course content. the option to restrict content only shows up on wp-pages, not on course (topics,lessons).Is it possible to display it on each course topic(what i actually need is, I want viewers only to view chapter 1 fr free , if they want to view the next they have to register.)

members plugin gives me access to course topics, lessons. but it do does not have any membership plans.

Also is it possible to have a form , where user can select his package and do the payment , rather than clicking on the package and then going to the form.

Would be great to hear back from your side at the earliest.

Thank you, Regards
Melchior.