MS SQL Server PIVOT QUERY

I have SQL below that returns valid data of seconds lag between rows entered by userid
I need a separate query I guess that shows how many records are entered PER 5 minute period PER AddedUserID
And it needs to be a pivot of course



AddedUsedID   [+5]   [+10]... etc...
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SELECT  u.FirstName + ' ' + u.LastName, q.AddedUserID,DATEDIFF(second, pDataDate, q.DateAdded) SecondsDiff
FROM    (
        SELECT  *,
                LAG(DateAdded) OVER (PARTITION BY AddedUserID ORDER BY AddedUserID,DateAdded) pDataDate
        FROM    Individuals WHERE CAST(DateAdded AS DATE) = CAST(GETDATE() AS DATE)
        ) q
		JOIN Users u ON u.UserID = q.AddedUserID
WHERE   pDataDate IS NOT NULL

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Data Returned