I have a question about how to pickup or trade trips under "Trading" on CCS.

I can go to Trading, and get trips to display. On the left side of the screen, both above and below the available trips, are four function tabs:

Trade|Pickup|Offer|Select

However, when I have tried to pickup or trade by selecting one of those tabs, it says:

"Please select at least one pairing to Pickup/Trade."

But I can't figure out how to select a trip. There is no check-box to the left of the pairings, as on real-time trade.

Do these buttons/tabs normally work, or do you have to go to real-time to pick them up?