How can I rename photos in new Photos app?
I recently 'updated' to Photos from iPhoto. Now I can't see how to rename groups of my pictures. E.g. when I import from qmycamera, I could select some of the imported photos and give them a common name and sequential numbering, then do the dame for another selection of photos, giving them a different name with sequential numbering. In iPhoto, I could use the "rename photos" function in the menubar Photos dropdown menu where I had options to change various things including rename with text and sequential numbering for selected groups of photos. I can't find this function anywhere in the new Photos application on Yosemite.
Can anyone steer me to the menus that do this? I can't find the info anywhere in any Photos material, even online forums etc.
In addition, there is no menubar along the top panel of the Photos pane. It's just a flat grey panel.
Many thanks in advance for any help offered.
MacBook Pro with Retina display, OS X Yosemite (10.10.3), 15" 768SSD 16GBRAM