Dripping is from date of sign-up. There is no option to set a start date. This means, it will not work for cohorts, only on-demand "evergreen" courses. It requires manually scheduling every lesson, sometimes over a number of weeks.
Case study: I ended up manually scheduling each of 75 lessons of a daily challenge over 6 weeks. Then I had to create a parallel schedule in threads and post there at the same time, so that the community discussion cards from the course had a counterpart participants could actually leave comments on. No integrated calendar, no automated recurring schedule. Big frustration. I probably spent six days just doing this.
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