"Automatic" means that these tubes have an aperture copuling lever. See images here:
https://www.pentaxforums.com/forums/sold-items/32342-sale-sold-vivitar-22-ext...eplus-mc4.html
Thus you can set aperture manually (rememeber to set "Aperture Ring Permotted" in your camera's Custom Settings) while focusing and metering light with fully open aperture. The lens won't stop down until you press the shutter release.
However, as you can see, the rear mount is black anodized and thus, electrically non-conductive. In order to use the green button for light metering you will need to make the rear metallic surface conductive by scraping off the black oxidized layer or place a piece of thin metallic foil opposite to the electrical contacts on your camera body's mount. Personally, I don't like the idea of metallic foil........ Besides, using the green button in macro context will rarely work unless you have lots of light.
Anyway, do remember to set "Aperture Ring Permitted" in your camera. On the K-5 it is Custom Settings no. 27 (thge very last one). Good luck!