Hello
To be sure that I good understand you (correct me if I wrong) :
- 2 Channel without any restriction : Lobby and AFK
- 1 "general" Channel for your server "member"
- 2 Restricted channel : channel A and channel B
And your server members must be able to move guest and member to the "general member" channel
So, on the channels
- Channel "general" for memeber : needed join power to 10
- Channel A and B : needed join power to 20
On server group Member
- b_channel_join_permanent : checked
- i_channel_join_power : value = 10
- b_group_is_permanent : checked (of course

)
- i_client_moce_power : value = 20
- i_client_needed_move_power : value = 20 (same for guest group if you want)
- b_client_skip_channelgroup_permissions :
unchecked
And for the restricted channel acces, just create a new CHANNEL group with the join power to 20 (as discribed in the first post of this thread)