BIG Launcher allows you to have full control over your screens. You can nest them into each other and create multiple subscreens, just like computer folders. But, when you choose not to automatically link them, you have to do it manually.
First, set up the screen to match your needs. Now, go to the screen you wish to link it from. let's link the contacts screen from the home screen. Tap the button you want to replace, select 'go to screen' and choose your desired screen. The button is replaced and your new screen is now accessible.