You need to … have some mechanism to assure continued moderation and maintenance should the usual moderator cease to be able to manage the site.
This is the most common reason single scheme websites and Facebook pages fall over. They need to be run by a committee or sub-committee so that there is a continuity regardless of who moves out or loses interest or suddenly lacks time. It’s also a good way of introducing new people to the ins and outs of strata committee life.