The distribution of the heat of reaction

Hello developers! I read the explanation for specifying the heat of reaction in the help document and didn’t quite understand it. For example, figure 1 below. How do I set this up in Figure 2?I hope I can get your help!Thank you!
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There is no GUI input for Ai and Ei. The reaction rate must be coded either in usr_rates.f or usr_rates_des.f. You can enter a value for the heat of reaction, but please not the unit is in J.kmol.