Ok, so ive been using flipbook, and on flipbook you can have a background layer and make the layers mesh together… I cant seem to find that on toon boom… andyone know where i could??

you can mix layers in toon boom, too. just add layers in exposure sheet (to the right), ‘drawing’ or ‘image’ for a background. you can even vectorize your imported images.
then you just switch the light table on (light bulb).
you can also move the layers in 3d, making them in front of or in the back of the other ones.
is that what you wanted to know?

update: light table has also a keyboard shortcut ‘L’ (toggle)