Nikon Z 8 Reference Manual page 486

Choose the interval between shots.
Highlight [Interval] and press
Choose the number of intervals and number of shots per interval.
Highlight [Intervals×shots/
interval] and press 2.
- In single frame release mode, the photographs for each interval will be taken at the rate
for continuous high-speed release mode.
Enable or disable exposure smoothing.
Highlight [Exposure smoothing] and press 2 to select [ON] or [OFF].
- Selecting [ON] allows the camera to adjust exposure to match the previous shot.
2.
486
Choose an interval (in hours,
minutes, and seconds) and
press J.
Choose the number of
intervals and the number of
shots per interval and press
J.
Interval Timer Shooting