Changing from surround to stereo on master bus

Getting Stuff Done How do I .... ?
#1

v7.2 on Linux. This is bound to be simple, so sorry in advance:)
I’ve somehow gotten the master bus of a project into surround mode and it’s exporting as a quad tracked flac. How do I change to a stereo output? Thank you!

#2

You can remove the additional output port using the routing grid (right click on the master-bus output button):

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