Twenty Eleven 2.2 and WP 4.4.10, header random images

Dear All,
as you can read from subject I’d like your help to
understand how can I make new settings inside my web site.

My web site running with latest Centos 6 and PHP-56 and it
works fine but I’d like change the behaviour of random
images header. Now I’ve five jpg that are show in random
order but I’d like to know if it is possible to link
one of this image to a particular page.

From settings inside menu it’s seems to be dosen’t
possible but Can I make some changes inside css or php
file to do that ?

Any idea ?

Thanks a lot
Best Regards
Willy