Hi Omar,
Thank you for your interest in Syncfusion products.
As of now, the mentioned support to customize the Schedule MonthView Appointment indicator is not available in Xamarin related platforms. We have already considered to implement this feature of customizing the Appointment Indicator UI, we have logged feature report for the same. We will implement and include this feature in any of our upcoming Volume release.
Month Cell Customization:
You can customize the entire month cell as per your requirement by using View argument of MonthCellLoaded event in Schedule, so that you can set as appointment indicator as per your requirement. Please refer our online User guide documentation for the same,
Regards,
Subburaj Pandian V.