Is it correct to club home based school and home based shopping together? If I want to increase the number of trip purposes in the template, is it just enough to edit in the editor?
You should not group them together if there are data for them in your model. A hint is think of the attraction process. Also, if there is not an exhaustive set of home-based trip purposes derived from your data, then it is still required to have a home-based other (HBO) trip purpose to account for home-based trip purposes that has not been explicitly modeled.
For your second question, it may be best to look into the Cubetown tutorial model, specifically, Voyager Demonstration Model > Trip Generation module. There should be a script there which focuses on trip purposes. Use this link: http://www.citilabs.com/support/learning-center/.
OK Thank you for the information