Simply copy the name and details of the person(s) you wish to sponsor and paste into an email.
The benefits of sponsoring are for sponsor and recipient. For the monk, it is for a better quality of life and to improve his physical well being. For you, the benefit is to simply help another, who through no fault of their own, finds themselves dependent on another for survival. This compassionate act of altruism has far reaching karmic consequences for you, and will, I am sure, have many valuable outcomes.