I can understand that I can add the Activity as a custom TASK field and then export the field with the time records. However, I am hoping to have the person entering the time choose what Activity to assign each individual Actual. Given that fact, I tried the time card billing category feature and added another category in addition to the STANDARD default one. However it seems that I cannot change it in the My Timecard view.
As for my last sentence in my post, I added the Activity to the MY TimeCard view. However when i go look at this view, the new field is not there. 🙁