Maps second encounter unview in the servers list

[SerialSam]

Hi
I have downloaded maps (.gro) in my repertory game as it's explained somewhere but i do not know where.
But no maps appear in the servers list in the game.
So it is impossible for me to play at other maps that thus of origin game.
Thanks fo all help

[red3ninja]

When a world is created, it can be singleplay and multiplay. Also combined. In general, GRO files are saved to the game directory (where Bin, mods and all other folders are visible).

[SerialSam]

Thanks
Apparenty i have really problems to see them into the servers list.