save&close button to survey page

Summary

Business Users want to add a save&close button to survey page to enable agent to continue from he stopped

Content

Business Users want to add a save&close button to survey page to enable agent to continue from he stopped, for example an agent is filling a survey on behalf of a customer and call is dropped , then he want to continue when call the customer again may be after days , so save and close will save the responses that agent entered first time , is there any solution for that case