We are saddened to hear this news. Developing thoughtful global citizens has never been more important. #PrayForLondon. https://www.nytimes.com/2017/03/22/world/europe/london-attack-what-we-know.html…See More
This is not where you upload your powerpoint slides for your presentation.
Please go to the lounge for help: Conference Help Lounge. You need to upload them in your Blackboard Collaborate room if you want to show them during your talk. If you want to attach them to your original proposal for people to download, you can do that.
Go to your proposal and attach there. You can find it under MY PAGE.