See this example :
1- Create an ARM profile per band
2- Create a Radio profile per band
3- Assign ARM profile based on the band
rf arm-profile "BUILDING-A-11A-ARM-PROFILE"
40MHz-allowed-bands None
no 80MHz-support
cm-band-g-max-signal 10
cm-steer-timeout 3
cm-lb-client-thresh 30
cm-sticky-snr 18
ideal-coverage-index 6
free-channel-index 40
backoff-time 1800
error-rate-threshold 70
error-rate-wait-time 90
!
rf arm-profile "BUILDING-A-11G-ARM-PROFILE"
no 80MHz-support
max-tx-power 12
min-tx-power 6
cm-band-g-max-signal 10
cm-steer-timeout 3
cm-lb-client-thresh 30
cm-sticky-snr 18
ideal-coverage-index 6
free-channel-index 40
backoff-time 1800
error-rate-threshold 70
error-rate-wait-time 90
!
rf dot11a-radio-profile "BUILDING-A-11A-RADIO-PROFILE"
arm-profile "BUILDING-A-11A-ARM-PROFILE"
!
rf dot11g-radio-profile "BUILDING-A-11G-RADIO-PROFILE"
spectrum-monitoring
arm-profile "BUILDING-A-11G-ARM-PROFILE"
!