Is there a way to create Catetories for the many galleries I would like to make? 

My example would be:
Under a Category/Heading of "Weddings" I would like to create several galleries and then under the Category/Heading "Portrait" I would also like to have several galleries.  The URLs would look something like this:

www mywebsite com/weddings/g1
www mywebsite com/weddings/g2
www mywebsite com/weddings/g3
and
www mywebsite com/portraits/g1
www mywebsite com/portraits/g2
www mywebsite com/portraits/g3

If I understand the svManager correctly, it only works in one directory?

What I am not looking for is:
www mywebsite com/galleries/wedding1
www mywebsite com/galleries/wedding2
www mywebsite com/galleries/wedding3
www mywebsite com/galleries/portrait1
www mywebsite com/galleries/portrait2
www mywebsite com/galleries/portrait2

Can anyone help me?