Hi @Jim M, thanks for getting back to me so quickly. We've been reviewing the block templates - it's how we've managed to get as far as we have. Unfortunately asking in a forum for the thousand things we're going to need to know is really going to slow the project down; how do we get active subscriptions for a member, how do we get members who has a subscription, what format are dates returned in, what other events are in this category, is user A in the same group as user B etc etc. There's just too much we don't know and I don't want to take up so much of the community's time. Am I right in thinking that the self-host version (4, I believe?), is going to be quite close to what is on the cloud option? If so, I'll just purchase a self host license and download the code, or is the code obfuscated in some way? Again, my sincere thanks for such a speedy response!