Hi Bill,
The field "Name" (opportunity name) resides in the opportunity table, not the activity table. In order to pull in data from another table, we use a feature called "add linked field" which is found under Tables / Fields -> Edit "Activity" Table -> Add linked field radio box. There link using the Opportunity table, and the "name" field. Give the "display as" caption as "Opportunity Name" just so you don't get confused what "name" refers to (i.e. not a first name / last name).
Regards,
Denis
PS: Just a reminder, that you should post questions related to Method in the general Method Q&A forum as you posted this in the Method API section. This question isn't related to the Method API.