7  언제등록하고, 얼마나 하는지 

the registration begins on January 2 and the seminar will start from 9:30 and end at 3pm so it takes 5 hours.

It starts on April 7th and ends on April 9th

8 하루에 네개의 회의가 있고 9시부터 2시까지 진행되는게 맞는지

no, the session will be have 3 sessions a day. there will be 3 sessions each day. The seminar will start at 9:30 and it will end at 3:30pm,

9 금리를 주제로 하는 회의가 있는지

Yes, there are two sessions about Interest Rate. It will be held on the second day, April 8th Tuesday.  

First one is will be session 1, on day 2, interest Rate Forecasts it will be held by Jane kim , and the second one is also on day 2, session 3 which is held by Jane kim, named as Fixied Vs Variable Interest Rates and you will like those two sessions.