I have created a layout override starting from the blog template and added it in mytemplate\html\com_content\category :
galleries.php galleries_item.php galleries.xml
I can create a new menu item with this layout and it works great.
I need to override the layout for a specific category but this new layout type does not show up in the "Alternative Layout" dropdown. I see only "From Global Options" and "From Component", but no layouts from my template (or any other template).
What should I do to also be able to set this layout as category alternative layout?