demo: add the right for the owner to add and delete the speaker role
demo: add the right for the owner to add and delete the speaker role

stormz/ucengine,AF83/ucengine,AF83/ucengine,stormz/ucengine,stormz/ucengine,AF83/ucengine,AF83/ucengine,stormz/ucengine,stormz/ucengine