Start scripts from other scripts?

I know this is probably THE dumbest question ever asked, but how do i make my local script start a script in my workspace? I can't find anything definitive anywhere.

This is what bindable events should be used for. You can learn more about bindablevents at https://developer.roblox.com/api-reference/class/BindableEvent. To use these you will need to use Fire() and Event().