Read The Dynamics 365 CRM Form Section Using Java Script

To read the Dynamics 365 CRM Tab section name used the ui.tabs.get("TabName").sections.get("TabsSectionName") method.

Now perform the operation to hide this Tab Section.

// To hide tabs Sections: true=Hide

formContext.ui.tabs.get("TabName").sections.get("TabsSectionName").setVisible(true);

// To hide tabs Sections: false=show

formContext.ui.tabs.get("TabName").sections.get("TabsSectionName").setVisible(false);