If you want the date and time in the Footer see the Help file:
Headers and Footers
If you select the Header and Footer option from the File menu, you can enter hard-coded information to appear on the header or footer of your report, just like in a spreadsheet.
You can also use some special codes to include other information. Wherever you want this information to appear in your header/footer, enter the code(s) of interest in the Header / Footer tab. They are:
Code Prints
$A Application name
$C Company name from the company profile
$D Date the report is printed
%H Hour the report is printed
%M Minute the report is printed
$F File name
$R Sheet tab name
$N Total number of pages in the report
$P Number of the individual page on the report
$X File path of the statement specification
$U User initials
$L User name (long)
$Y As of Month dd, yyyy for the period and year selected for the statement