Greetings from Syncfusion Support.
Kindly check whether you have set ShowCurrentTimeIndicator as true in your sample to display the current time indicator. Also please check whether CurrentDate of the scheduler is beyond or later the system current date. If it is beyond or later, then move it to current date by clicking today button in the calendar to display the current time indicator.
Please check the above cases, other than this we don’t have any specific configurations to display current time indicator. If the issue persist still, kindly share your scheduler code to check further.