We encourage you to choose two suitable mentors when applying, of which you should prioritize one. In the application form, you will be asked to motivate your choices. By indicating two options, you have a better chance of being admitted to HITP.
You are free to choose for example two thematic groups, or you can pick one city thematic group and another different organization. Just check that your programme is listed and keep in mind you have to prioritize.
The list of mentors: