In order to know the logged on users, you need to have the computers scanned with Lansweeper. From AD computer accounts, we don't scan the account creation date. What might help you is
tblADComputers.lastchanged, which contains the date of the last change on this Active Directory account. Please find an example report below:
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tblADComputers.Lastchanged As [Last AD change],
tblAssets.Username,
tblADusers.Department As [User Department],
tblAssets.Lastseen,
tblAssets.Lasttried
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tblADComputers On tblAssets.AssetID = tblADComputers.AssetID
Left Join tblADusers On tblADusers.Username = tblAssets.Username And
tblADusers.Userdomain = tblAssets.Userdomain
Where tblAssetCustom.State = 1
Order By tblAssets.AssetName