You can create Duplicate Variant and make the changes to new page.
Also change the variance criteria so that only new variance visible to all users.
https://developer.servicenow.com/dev.do#!/learn/courses/utah/app_store_learnv2_uibuilder_utah_ui_bui...
https://docs.servicenow.com/bundle/tokyo-application-development/page/administer/ui-builder/task/cre...
Please appreciate the efforts of community contributors by marking appropriate response as correct answer and helpful, this may help other community users to follow correct solution in future.
Thanks
Anil Lande
