She could also do the same in Manila if this fits in better with her travel plans. My wife went to the CFO seminar in Cebu and then stayed an extra day in Manila whilst on her way to the UK, so that she could collect her CFO passport sticker.
I can't really remember the reason for this, but I think it was because she wanted to change her passport to her married name before applying for her visa, so she had to attend the seminar to do this. But it seems, although you can attend the seminar and get the certificate to prove you have attended, they won't issue the passport sticker until you have a visa in your passport.
Iain