There are conditional activities and have you looked at the Lesson module docs.
Courses and course formats
Conditonal Release: viewing last page in a sequence?
ការពិភាក្សាត្រូវបានបិទ ដូច្នេះអ្នកមិនអាចឆ្លើយតបទៀតទេ។
There are conditional activities and have you looked at the Lesson module docs.