https://prosody.im/doc/modules/mod_muc#room-creation-restrictions states that "admin" is a valid value, however prosody reports
error Config option 'restrict_room_creation' not in set of allowed values (one of: {false, true, local})
which is also suggested by https://prosody.im/doc/release/13.0.0#muc
Also, some of the new v13 MUC configuration options are missing from the mod_muc page (no mention of muc_room_allow_public or muc_room_allow_persistent for example).
https://prosody.im/doc/modules/mod_muc#room-creation-restrictions states that "admin" is a valid value, however prosody reports error Config option 'restrict_room_creation' not in set of allowed values (one of: {false, true, local}) which is also suggested by https://prosody.im/doc/release/13.0.0#muc Also, some of the new v13 MUC configuration options are missing from the mod_muc page (no mention of muc_room_allow_public or muc_room_allow_persistent for example).