Hi, I already have created galleries in drupal (Example: http://somewebsite.com/image/tid/1[2,3,4 etc.]). How to configure Galleria to work with already existing one (created Gallery in drupal)

In documentation, there is no instruction or explanation how to configure Galleria to work with gallery created >> admin/content/image/add

PS: The existing Gallery was created this way >> admin/content/image/add and all pictures were uploaded to this gallery.

I have installed all required modules

Any help and ideas appreciated, thank you.