export\import question in project manage

Hi all,

I want to know how to manage a small project between 3 people.For example, I charge the gameplay part and builder a rough level. Then I give it to artist. After they added some details to scene,which assets will they export from Unity? Because I already added some character behavior scripts and I don’t want to copy the whole folder. Thanks in advance.

Have you considered using some kind of version control system? Or are you trying to do it with free version?