It's pretty straightforward but requires some extra work, particularly if you have multiple SSIDs and those SSIDs are on VLANs other than VLAN 1. In the example below we have two SSIDs, with the first /master SSID on VLAN 1 (PVID 1) and the second/slave SSID on VLAN 10. Note that I do not go into detail what the SSID names are nor do I define the Master and Slave configurations here, as it's outside the scope of this post.
With CAPsMANv1, all the bridge port additions and VLAN settings on access points were configured automatically. In CAPsMANv2, they currently ( as of v7.8 ) are not. This is particular to radios that only support 802.11ac as I have not yet tested radios with 802.11ax support. The documentation seems to suggest that it *does* take care of it automatically on those radios, but it's best to be aware of the potential issue.
If you try to define VLANs in the datapath settings within a configuration profile, and then assign this configuration to an access point that only supports 802.11ac, you will receive an error of "vlan-id configured but interface does not support assigning vlans". The configuration I provide below resolves this issue (assuming you also remove the VLAN ID from the CAPsMAN configuration profile, as I have not tested this if you leave the setting in).
CAPsMAN config
Note that we do not define VLANs for the access point's WiFi interfaces here. This is all configured on the CAP (access point).
/interface wifiwave2 provisioning add action=create-enabled disabled=no master-configuration=config_MASTER slave-configurations=config_SLAVE
/interface wifiwave2 add configuration=config_MASTER configuration.mode=ap disabled=no name=cap-wifi1
/interface wifiwave2 add configuration=config_SLAVE configuration.mode=ap disabled=no master-interface=cap-wifi1 name=cap-wifi2
CAP (access point) config
In this example, the access point connection to other switches is ether1. On your device the slave interface (wifi6) could be named wifi5 or something else. It's dynamically created. The point being that you must manually add the interface as a port on the bridge, including its PVID.
interface/wifiwave2/set wifi1,wifi2 configuration.manager=capsman
/interface wifiwave2 cap set caps-man-addresses=<IP_OF_CAPsMAN> enabled=yes
/interface bridge add name=bridge vlan-filtering=yes
/interface bridge port add bridge=bridge interface=ether1
/interface bridge port add bridge=bridge interface=wifi1
/interface bridge port add bridge=bridge interface=wifi6 pvid=10
/interface bridge vlan add bridge=bridge tagged=bridge,ether1 vlan-ids=10