Mac server permissions problems for windows client

[englishpremier]

We have Mac file server in our office, which consists of a mix of PCs and Mac.

I can create and save files in most of the directories apart from one, which sods law, is the directory i actually need 777 permisions on.

I can created folders in this directry but I can only Read-Only the files that are already there.

Does anyone know how to setup the file server to allow the windows PC full 777 access to every directory?

Thank

 

[englishpremier]

That's the same as clicking more info?

I've done that, and have the following:

companyname: custom (will not change)
owner: read & write
group: read & write
others: read only (box is greyed out)

 

[englishpremier]

It is unlocked that was the first thing I did.

While I can use Linux, I have no idea about macs.

I did run sudo chmod -R 777 on the directory but still everything was read only