Use the slider up there with Arg# textbox where you put the number of animation you need to tweak (see attached pdf). There's also a button for playing all at once and animation player somewhere in the menu.
To change a texture, go view->dialogs->show liveries dialogs, assuming the model you're painting has entry in default liveries folder (DCS World\Bazar\Liveries). If it does not (like C-101, Mig-21...), you have to put the textures in TempTextures folder in DCS World\Bazar\ Draw arguments for aircrafts 1.1.pdf