1. To make an appointment for the Open Day of Software College of Henan University, you can first visit official website of Software College of Henan University or official website to find out whether there are related open day activities and appointment methods.

2. Secondly, you can try to contact the telephone/email address of the school admissions office or the school of software to inquire about the time and appointment method of the open day.

3. Finally, you can also pay attention to the official WeChat official account of Henan University School of Software or other social media platforms, and publish relevant appointment information and event notices.