How to create sub-gallerie

hi all. starting with backlight 6 i was previously using ttg3 long time ago
how can i do to create sub-galleries… for example
usa (as the main gallery name)/arizona/newyork/california etc etc

thanks very much for your great help

regards

eric

Hi Eric,

Use album sets to organize galleries into categories.

https://backlight.me/docs/albums

ok will have a look thanks very much for your quick answer
eric