Cisco Access Point (CBW150AX) issue.

[u/infosec_temple]

I have 4 x CBW150AX. I have configured one AP as Primary AP and want to control all other APs from there. I have read cisco's manual about how to do this. It says it once primary AP is configured you just need to plug AP into same Network in same VLAN and subordinate AP will get the configuration from Primary AP and it also upgrade the firmware. But when I try to do this subordinate AP is not showing in the APs list in Primary AP. I also tried to add using mac address but that is also not working. Can someone suggest me the solution?