Yes, but file access permissions for each file and user need to be adjusted appropriately for proper access. The BerryBoot default configuration does not provide access from each operating system.
See standard Linux® constructs for complete understanding of file permissions.
You can use the chown command to set access permissions. However, this will be done at your own risk:
Sudo chown [username][directory]
Example for setting up a shared folder:
sudo mkdir /media/pi/berryboot/shared_folder_for_all
sudo chmod 777 /media/pi/berryboot/shared_folder_for_all