Put one soy yogurt spoon in each glass.
Fill with soy milk until the glass is half way full.
Mix well with the spoon.
Fill the whole glass with soy milk and mix again.
Plug in the yogurt maker. Let the yogurts "cook" during 8-12 hours. The time of "cooking" depends on the weather. In summer, less time is required due to the higher temperatures. One may also cover the yogurt maker with a cloth to help keep the heat.
Put the tap on each yogurt and save in the refrigerator. Once they are cold, they are ready.
Recommendations: One may use fortified soy milk products with calcium, vitamin B12 and/or D to ensure better nutrition. Herbalist natural yogurts are the best. This yogurt may be enjoyed with brown sugar, cereals, and/or fruit.
More on this recipe with images at: http://nutty-brunette-veg.blogspot.com/2011/09/make-your-own-soy-yogurts.html

1 natural soy yogurt
1 liter of soy milk

Tools:
small spoon
glass yogurt containers
yogurt maker