I everybody,
I’m a beginner to make video game, but I want to try with Unreal Engine 4. I have only 1 simple question. Can we share the project who want to make with a friend, because I have some people who want help me, and I didn’t know if its can be possible.
Can I have an aswer please 
(sorry for my english, it’s my second language, I speak french )
Yes, but it is not easy. You need to get source control set up, this took me 12 hours, and a further 20 hours with problems. It basically lets more than 1 person work on files at the same time. You could use something like dropbox very easily, but then there are problems if more than 1 person edits the same file at the same time. Perforce is the source control I am using.
As already mentioned, you need source control. Here are some useful information:
https://wiki.unrealengine/Git_source_control_(Tutorial)
https://docs.unrealengine/latest/INT/Engine/Basics/SourceControl/index.html 
thank you
But I have annother question; it is possible to do a MOBA with Unreal Engine 4?
You can create everything with the UE4 
e.g
thank you , but where you found what you need (because I did want to create a MOBA, but I didn’t know how )
-the documentation: https://docs.unrealengine/latest/INT/
-youtube
-learning by doing
-and you can also ask questions here in the forum -> we are always here to help 
Did someone can add me on skype and help me, because I didn’t understand all and I need someone to help me
When you like, you can add me, but I’m not so active
How can I created my own character
You have to create a mesh in a 3d program - rigg it - create the animations - import everything - follow this tutorial:
I add you on skype
Your project files are yours and you can do whatever you want with them… just don’t licence them with GPL it may create issues 
Ok, will add you in the evening (currently not at home)