Years ago, when I was in college, I was sitting in the classroom and a guy sitting right next to me started having a grand mal seizure. My old medic training kicked in and I took charge. I told the professor to dial 911 and then proceeded to deal with the situation until the calvary arrived.
While I technically did the right thing, and probably would do the same thing again today, I have always wished I could have put him in an adjoining room and stayed with him until it passed. He was so embarrassed by the situation that he left school and I never saw him again.
The stigma of seizures is a cruel part of the condition, and most of the time no actual physical harm comes as a result of a seizure.
And the underlying cause of it can't be dealt with immediately, so there's no real pressing hurry for treatment unless their airway is compromised.
Of course, in today's hyper-charged legal environment, you don't dare do anything less than dual 911.