Multiple Dates

So, I have a "Request Date" field and a "Request Submit Date" - and right now I have them set to set to the current day, except what I would prefer is that the request date be the date that the request is started, and then the submit date be the day that it's submitted, which could potentially be a different date. Is there a way to do that? - I feel like there is, I just cannot phrase it in a way that the school of google helps.

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Michelle Craig
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