How do I set the options for shooting still images with two cards inserted into the camera?

When you shoot still images with two cards inserted into the E-M1 Mark II camera, you can select in  Save Settings how to record the shooting data to each card.

The available settings are Standard, Auto Switch, Dual Independent and Dual Same. Standard is the default setting. In Auto Switch, the recording switches to the other card when the card in use becomes full. In Dual Independent, the images in the two cards are recorded in different image quality modes. In Dual Same, the images in the two cards are recorded in the same image quality mode.

These settings are available for still image shooting.