coop edit

[[KK]Powner]

Hello community,
first my english is not the best, but i hope you can understand me!
Ok! My problem:
i have a own server and now i want to do coop edit with my friends! But what i have to do?

[MathiasB]

[SELECT ALL] Code:

/sendmap [mapname]

[SELECT ALL] Code:

/coop [mapname]