Default [Q]Extended usage/standby


I noticed in a topic about maximizing battery that the z2 has separate options to turn on extended usage and extended standby. When i tried to find them on my z1, i found out that these are no settings to turn on and off with stamina mode. Like they are always turned on when i use stamina mode. So is this a special feature of the z2? Or is there a way to change these settings separately?

Thanks for answering!