@RRMaillet Thank you for your inquiry. You may submit 1 CPE per hour of attendance for each lab you complete as these are can be considered self-study since you are learning. You would submit this under the 'Education' tab and then 'Online webinars, podcasts and other online training'.
@amandavanceISC2 can the CPEs from such CTFD challenges be submitted under "Education" -> "Courses and Seminars - Other"? “presenter” and “year published” fields under “online webinars, podcasts and other online materials” are a bit confusing for me.