Raspi3 - Power Saving --> Reboot

hello

i use 8.1.2 on my Pi 3. in the settings menu / power saving i have only

the point: shutdown

i need here reboot, how can i add this and why is this point not there?

regard

Estuary.Refresh, but same problem with Estuary oder Confluence.

the point "shutdown function" is grey, not changeable.