Nikon Z fc N2016 Reference Manual page 261

The original Picture Control icon
D
The original preset Picture Control on which the custom Picture Control is
based is indicated by an icon in the edit display.
Custom Picture Control options
D
The options available with custom Picture Controls are the same as those on
which the custom Picture Control was based.
Load/save
D
The [Load/save] item in the [Manage Picture Control] menu can be used to
copy custom Picture Controls from the camera to a memory card. You can
also delete custom Picture Controls in a memory card, or copy them to the
camera.
･ [Copy to camera]: Copy (import) custom Picture Controls from the
memory card to the camera. The Picture Controls are copied to custom
Picture Controls C-1 through C-9 on the camera and can be named as
desired.
･ [Delete from card]: Delete selected custom Picture Controls from the
memory card.
･ [Copy to card]: Copy (export) a custom Picture Control from the camera
to a memory card. Highlight a destination (1 through 99) for the selected
Picture Control and press J to export it to the memory card.
C The photo shooting menu: Shooting options
261