I don't think the sync preferences feature is currently available for InDesign.
I think these are the apps that support it currently
I'm moving your post over to the InDesign forum in case others know something different or some kind of workaround.
Sync setting has been made avialable in the recent InDesign 9.1 update.You can get the details here.
What is the version of InDesign it shows when go to Help>> About InDesign (windows) and InDesign>>About InDesign (Mac).
It should be InDesign 9.1 , if it isn't then your InDesign is not up to date.
Visit Help >> Update and have InDesign CC update.
Sync problems indesign!
I've updated to indesign 9.1 on both mac's....but still not able to sync my preferences. I've cleared my settings and synced again several times but no luck. Need help with this.
thnx in advance,