How to configure HE80+80 on E8450

For Developers
1

Is there a need to configure 80+80 mode manually, On the current snapshots I see HE160 as htmode for 802.11x operation, and I've enabled it as follows

config wifi-device 'radio1'
        option type 'mac80211'
        option path '1a143000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0'
        option band '5g'
        option he_bss_color '8'
        option he_su_beamformee '1'
        option cell_density '1'
        option htmode 'HE160'
        option channel 'auto'

As I understand it there is support HE80+80 at the hardware level, but how do we configure it?

2 
# iwinfo wl1-ap0 htmodelist
HT20 HT40 VHT20 VHT40 VHT80 VHT80+80 VHT160 HE20 HE40 HE80 HE80+80 HE160

Could try HE80+80 instead of HE160 but not sure how to set multichannel.