Ability to enter request time from request creation

We sometimes get calls for help that do not go through the SD+ system first. So we go and do whatever the requester asks for then add a SD+ request and close it immediately. Currently we have to go back in, and edit the request to set the times, how long the request took etc...

Is there a way to on creation of a request set the request start time manually or update the request?

So for example if I get a call at 9:30am on Monday I go and take care of the problem but do not get back to my desk to add a SD+ request until noon that same day.
I enter the request and it goes into the system as the request being made at Noon on Monday... I then have to go into the request a second time and adjust that time to reflect the correct request time.