This module complements mod_mam by allowing clients to change archiving preferences through an Ad-hoc command.
When enabled, an “Archive Settings” command should appear in the list of Ad-hoc commands available. This allows the user to change default policy (always, never, roster) and which JIDs to always store or never store.
First copy the module to the prosody plugins directory.
Then add “mam_adhoc” to your modules_enabled list: