i have added a server grp (registred useres) i want to give them the premission to join all channels

the value is 50 , the value to join is 40 but they cant join the channels always the error
>>> insufficient client permissions (gescheitert an i_channel_join_power (13682/0x3572)) <<<<

i dont want add any registered user in a channel grp, i have many channels and many user

what cna i do ???

i hope you understand my problem my english is not good