Dual Band: How to assign individual password(s) to each SSID?

RouterOS Wireless Networking
1

The dual band device hAP ac^2 has wlan1(2GHz) and wlan2(5GHz).
One can assign each a different SSID, but it seems not possible to give each a different password,
as the WPA/WPA2 passwords made in Webfig under Wireless/SecurityProtocols seem to be used/shared with all the wlanX services.
Or is there a way to assign each wlanX a different password set (WPA/WPA2)?

Update:
solved; it seems one just needs to create a new security profile and assign that one to the service instead of the default security profile.