Hello and Welcome to the third part of Video 4 of our course on Mobile Data Collection using the KoBoToolbox. In this video, I covered how to add constraints and constraint messages to Kobo forms, how to perform calculations within kobo forms and also how to add skip logic patterns. I also covered how to set a question to a “read only” question, and also how to make modifications to the appearance of your questions. All of these things, were done within the XLSForm builder.