Image Gallery Container

Hello friends

I'm recently using drupal. I have a consultation and I hope they can help me
I have created photo galleries and they are all grouped into a kind of galleries container.
How can I create a new gallery container?
For example, I need to have several galleries in a container called 2016 and other galleries in a container called 2017.
I only have one galleries container by default.

Thanks for the support.

IVAN