ZFP - "Synchronize icon" activation and "selection of synchronization method"

When synchronize icon was OFF mode, customer want to use it and select either "Sync by Relative Number" or "Sync by Relative Position".

After that customer hope the synchronize icon also to be active, but it doesn't, so they need to click it again.

They want to active it by one click action.(Select method and "Sync icon" active).