What is the difference between DDC selection?

Dear developers, I wanna ask something about DDC

I am gonna make server with NAS soon and I have a question

In Editor, I found “Global Local DDC path” , “Global Network DDC path” , “Local DDC Path” , “Network DDC path”.

But I only know the difference between local and network difference but What is Global mean?

If I cowork my companies, then I should use global network DDC Path?

Please share me some inforemation about that 4 selections.

Thanks for your attention and informations