For some reason I don't know how to insert clef changes in the measures...
I don't know how else to explain it. Whatever I do, I'm always stuck with one treble clef and one bass clef.
And the Finale tutorial isn't helping haha.

If you're using Finale Notepad, you can't. But if you're actually using any other version, click on a measure, then click the clef tool.

err seems like i have to buy it...? i really can't do that right now eh.

We have a dedicated thread for composing programs in the Composition forum