Hi Shiva,
Thank you for your interest in Syncfusion products.
You can achieve your desired behavior in entering timevalue in a cell by using the following code
this.gridGroupingControl1.TableDescriptor.Columns[ColIndex/ColName].Appearance.AnyRecordFieldCell.CellValueType = typeof(DateTime);
this.gridGroupingControl1.TableDescriptor.Columns[ColIndex/ColName].Appearance.AnyRecordFieldCell.Format = "hh:mm";
Sample for your reference:
http://www.syncfusion.com/downloads/Support/DirectTrac/85957/DateTime-1592518982.zipPlease let us know if you have any other concerns
Regards,
Kalai