I am new to Omeka and I would like to build exhibits with a navigation on the left side like this:
Is there a particular theme which allows this kind of navigation? Or is it necessary to have PHP skills? Must I modify the header file in commons?
In the site of the Rockfeller foundation, do you know if the dropdown menus, under the main menus, are an adaptation of a theme or if there is a theme which can make this?
Is it possible to add more than 12 or 13 items on the layout in pages of exhibits section? Which file must I modify?