MUC component automatically discovers disconnected participants by checking if user is still connected every 5 minutes.
It is possible to increase checking frequency by setting search-ghosts-every-minute
property of MUC component to true
muc () { 'search-ghosts-every-minute' = trues }
It is also possible to disable this discovery by setting ghostbuster-enabled
property of MUC component to false
muc () { 'ghostbuster-enabled' = false }