The SPELL Newsletter now has 450 subscribers. Unfortunately, for some reason a dozen addresses are returning me a “delivery failed” message. If you have requested to receive the newsletter but didn’t get any message this week, please get in touch with me to confirm your e-mail address. In the meantime, I am attaching the documentation to this post (see link below).
SPELL is a freemium program (free entry level solutions, full solutions for a fee). Even if you are not willing to pay for SPELL, I think the document is a good read as it explains in detail the purpose of cascading selects, and how they are related to lookup columns. And for the sake of transparency it also lists some alternate tools that will help you achieve the same result (see “What are my other options” at the end of the document).