It’s an interesting one, I’ve found that among the owners there will be others who have the experience and the interest if they are personally invited, and they think it’s (or some individuals are) not a basket case. If it’s the later you need to consider a plan of attack you can sell to the others to help right the ship. Be prepared to play the numbers game if that’s what it takes.
In Qld, current executive (chair, treas, sec) committee members can go around again just by not resigning so if you have trouble with any or all you need to put up someone for that position and the owners will vote between both candidates. If incumbents have been there for more than a few years and not doing stuff I think other owners will be open to give someone else a shot. Then that prior person is out of the gig, unless you don’t yet have a full dance card and they offer to join as a regular committee member from the floor of the AGM.
But be careful what you wish for as getting new folks can be a bit of a frying pan into the fire experience so pre-screen all candidates before you invite them for having the Skills required, Timely intent to get on with stuff, self Application to do the job they are volunteering for, and knowing Value. Avoid old folks who have poor eyesight and mobility and that buck change, and upper level professionals who think they can manage hands-off and just delegate the work away with a tick and a flick. Investors can sometimes be better than owners because their motivations are likely different.