How to use a batch distillation column to separate azeotropes in ChemCAD

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I barely understand ChemCAD even after self-studying it, but the experienced colleagues at my workplace keep bringing in various problems to test my skills. Today they gave me two such problems, requiring the use of a batch distillation column for separation. One involves a mixture of 89% propane and 11% methanol, and the goal is to separate out 99% propane at atmospheric pressure. However, no matter what I try, I can’t obtain the desired results. The boiling point of propane is 56.2 degrees, while that of methanol is 64.7 degrees; they form an azeotrope at 55.3 degrees； The other is an 87% isopropanol aqueous solution; it is also desired to separate out 99% pure isopropanol under normal pressure. The boiling point of isopropanol is 82.26 degrees, and it forms an azeotrope with water at 80.2 degrees. How can separation to 99% purity be achieved? I thought of extraction separation, but how should the extractant be chosen? Can ChemCAD be used to select an appropriate one? How exactly is separation carried out using an extractant? Could my friends please help me? Thank you so much :)