Remove a doc maker

If I remove a doc maker, the docs created by him became readonly.
How to resolve this issue?
1.Let him remove or delete all the docs created by him? My team also need the docs.
2.Let the administrator copy all of the docs created by him and delete the docs then.
3.Transfer the owner to the administrator.
I want resolve it by 3. But how to do this?

Hello there @Wen_Le! Welcome to the community!
Yes! third option is possible!
Here’s a guide on how to do it:

Hello @Saul_Garcia, thanks.
But I think it should be more convenient.
Prompt “transfer all docs ower by xxx to xxx” when remove somebody.
I like coda, haha.