
Apr 22, 2015 How to use multiple photo libraries with Photos for Mac. Photos for Mac lets you work with multiple libraries. Learn how to choose a default library, open another library, and merge multiple. Apr 14, 2015 Here is how you can create new photos library in Photos app on Mac OS X Yosemite 10.10.3 to manage your photos and videos properly. Here is how you can create new photos library in Photos app on Mac OS X. Where does the Mac store account pictures? Ask Question Asked. Mac OS X 10.5+ stores user's account pictures within the Directory Service with the exception of an account that has not modified their user picture from when first created. Then go into the Users and Groups under system preferences and change the photos. To change the photos.
Photos User Guide
When you import photos and videos into Photos, they’re copied to the Photos library in the Pictures folder. If you prefer, you can store photos and videos outside the Photos library (for example, in a folder on your Mac or on an external drive) and still view them in Photos. Files stored outside your library are called referenced files.
Referenced files aren’t automatically uploaded and stored in iCloud, and they aren’t backed up along with the rest of your files when you back up your photo library—you must back them up manually. To avoid manually backing up referenced files, you can move or consolidate the files into your library.

Store imported files outside the Photos library
In the Photos app on your Mac, choose Photos > Preferences, then click General.
Deselect the “Copy items to the Photos library” checkbox.
Now, when you import photos or video, Photos leaves the files in their original location and accesses them as referenced files.
Find a referenced file in the Finder
Mac Photos Location
In the Photos app on your Mac, select a referenced file.
Choose File > Show Referenced File in Finder.
Copy referenced files into a Photos library
You can copy referenced files into your photo library so they’re easier to back up and are automatically stored in iCloud if iCloud Photos is turned on.
In the Photos app on your Mac, select the files that you want to copy into the photo library.
Choose File > Consolidate.
Click Copy.