To provide a larger areal with water by using more drip devider or tropf-blumat, you proberbly need longer pieces of the dripping hose. For you won't want to buy new dripping hose each time you re-organize your irrigation system, you can use the mini hose connector for the dripping hose. It connects two ends of two pieces of dripping hose to a longer one to  bridge over longer distances to plants or the supply hose. The supply hose has to be connected wether with the water tab or a tank.
Now, when the soil becomes dry, the desiccating pottery sensor creates a certain section power for the physical  wetness balance, that releases the watering. As soon as the soil is wet enough, the suction power stops and the watering ends just  by itself.

The necessary dripping hose is available as running yard or, if you prefer, as a 50 m reel.

You will find find all information about the Blumat Watering system in the annexed brochure. You can download it here  (only available in German).