I know this may sound dumb, but I kneed help?

I only started using the editor yesterday on PC, but I dont quite understand how you unlock leagues.
For example, I cant unlock the lowest English leagues, I believe their are the "isthmian leagues"?
Help Please?

ehm use search button in the future thank you.

i was kind enough to do it for you this time though: http://www.fmscout.com/i-1278-Activating-leagues-in-the-FM-editor.html