Place reference map inside map window - possible?

[Wolfgang Qual]

Hi list,
I would like to place the reference map inside the map window. I heard 
that this should be possible, but I do not know how?
I would be very glad to receive some hints.

Best regards,

Wolfgang

-- 
Wolfgang Qual
Landeshauptstadt München
Referat für Gesundheit und Umwelt
RGU-UW 11
Sg. 1 Gesundheits- und Umweltberichterstattung,
Energie und Klimaschutz
Bayerstr. 28a, 80335 München
Tel.: +49 (0)89 233-477 17
Fax.: +49 (0)89 233-477 05
E-Mail: wolfgang.qual at muenchen.de