Show/Hide business process in Dynamics 365

Use getVisible method to retrieve whether the business process control is visible

Xrm.Page.ui.process.getVisible();

Use setVisible method to show or hide the business process flow control.

Xrm.Page.ui.process.setVisible();

// isVisible parameter should be true or false based on your requirement.

function showHideBP(isVisible){   

        Xrm.Page.ui.process.setVisible(isVisible);   

}