For practical purposes I would group Dementia, Memory loss and Alzheimer's Disease into one Community.
I suspect that this would not be possible, at this point, being a sizeable logistics challenge to arrange this.
Before you pass any judgement, I do understand the uniqueness of each
condition, however, because of the low traffic, the amount of interest seems to be low as well.
Also people with some symptoms relating to any of those
3 conditions and not diagnosed, which community out of the 3 should they
Anyway, "food for thought", as the saying goes.