The legacy Internet Options menu is now only relevant when using the Internet Explorer mode in Edge on ... I'll show you ...

Uninstalling Internet Explorer will not remove the shared rendering ... Choose Control Panel entry from the list to open the Control Panel. Choose Programs and features entry from the list.

Look for Disable Internet Explorer 11 as a standalone browser. Double-click on it, select Enabled, and to configure how to notify users about this action, select one of the following options ...

The Edge icon, a blue letter "e," is similar to the Internet Explorer icon, but they are separate applications. To open Internet Explorer, open the Windows menu in the lower left corner of your screen ...