How to remove the title bar of the RibbonForm and replace with the system title bar in WinForms RibbonControlAdv?
Remove the title bar
The IsFormManager property gets or sets whether the form title bar should be removed and replaced with built in RibbonControlAdv System buttons.
C#
this.ribbonControlAdv1.IsFormManager=false;
VB
Me.ribbonControlAdv1.IsFormManager=false
Reference link: https://help.syncfusion.com/windowsforms/ribbon/ribbon-form