Hi Alex,
As of now, SfSchedule does not support time ruler view
customization. We have already logged a feature request for this and will
implement it in any of our upcoming releases.
Feedback Link: https://www.syncfusion.com/feedback/32316/provide-a-template-support-for-the-timeruler-in-sfschedule
If you have any more specifications/suggestions for the
feature request, you can add it as a comment in the portal and cast your vote
to make it count.
Regards,
Karthik Raja A