I haven't exposed a setting for this in the State Manager UI, but you could edit the Prism export script slightly to use any custom fbx settings.
The location of the script depends on what DCC you are using. For example for Maya you can find the fbx export line here:
https://github.com/RichardFrangenberg/Prism/blob/85daf03addde82c38cff830dc5ed19b7e29d9703/Prism/Plugins/Apps/Maya/Scripts/Prism_Maya_Functions.py#L593
And all available fbx settings are documented here:
https://knowledge.autodesk.com/support/maya/getting-started/caas/CloudHelp/cloudhelp/2018/ENU/Maya-DataExchange/files/GUID-6CCE943A-2ED4-4CEE-96D4-9CB19C28F4E0-htm.html
I haven't exposed a setting for this in the State Manager UI, but you could edit the Prism export script slightly to use any custom fbx settings.
The location of the script depends on what DCC you are using. For example for Maya you can find the fbx export line here: