Functions opening in different windows - Matlab

Hi all, this might be the noobiest of all questions, but I'm working on a script with many different functions in Matlab and I want to have them all tabulated at the top of 1 window but they're all opening in different windows and its driving me INSANE! I'm running Windows 7 and have 2 screens going on. Matlab sometimes starts to open things in new tabs but other times not and I don't know what it is I'm doing or where these options are. Thanks for helping out.

Mark