We are setting up an experiment that compares the effectiveness of two different versions of the same lesson. To design this experiment, you have to create two conditions in the Experiment Design tab, and give each of them an assignment weight. The assignment weights should add up to 100. After the conditions, you have to define Design Points for the experiment. Each decision point is represented by its corresponding site and target. Decision point is the place or function in code where the conditional code execution happens. For more description, please refer to the following papers: and .