Not sure about version 10.5, but recent versions have the sliders in the image below.
Not sure how they actually work , but suspect they use PGPeakLimit plugin in the output path. In older versions they may be available but located in a different place, maybe as menu item as opposed to sliders in the mixer shown.

You could also simply open the resulting file in Realband (from a BiaB song saved as either a Wav or a native .sgu format) ... and then use the PGPeakLimit plugin on the whole thing as a VST .. but that would open a whole 'nother world of PGMusic goodness.
wink

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