RSTP on SWOS

Good morning,
I am planning to use a CCS610 switch to control a 60 GHz wifi link with a 5 GHz backup using the RST protocol.
I would like the 60 GHz to be the primary link. Both links have the same path costs.
In the documentation of SWOS I found no method to specify a priority, but I did observe the port with the lowest port number was selected as root port.
Is this part of the port selection process?

Thanks!

Yes, the election process will be the same as described for RouterOS https://help.mikrotik.com/docs/display/ROS/Spanning+Tree+Protocol#SpanningTreeProtocol-Electionprocess as this is defined by the protocol.

There doesn’t appear to be a mechanism to manually adjust the port path cost in SwOS, it is determined by the interface speed and port cost mode (short or long), so using the port order is the only mechanism for selecting the path in this case.

Thank you for this clarification. Much appreciated.