When editing a schematic, you can use the GROUP tool to select one or more Parts, then move the Group to a different page of the schematic.
If you attempt to do this in EAGLE 8.0.1 on the Mac (Sierra 10.12.3) the application will crash.
Crashed Thread: 0 CrBrowserMain Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
Hello AdamTTNDE,
Thank you for your participation and for your screencast! This issue has been reported previously and the developers are working on it as we speak.
Let me know if there's anything else I can do for you.
Best Regards,