Development is when you write the script, essentially. When they want to put a series on the air, the first thing you do is have an idea for what the series should be and then go to a broadcaster, often with a producer, and pitch it. If they like it, they commission a script. That's the first stage of development.
There is some funding at CTF for development, but not a lot. I don't know whether it's at CTF, but there is supplemental funding. But it needs to be supported elsewhere.
Then from the script stage.... The CBC right now is shooting pilots of some of the scripts they get written, and then evaluating the pilots and deciding whether the project should go on the air or not, and then going forward with full production.