configs\mover\mover.cfg

set scr_visualmover "1"
set scr_visual_mover_color "red"

Also

configs\gametypes\visualguide.cfg

// Sets which gametype the visual guide will setup in order for editing to occur.
// Default = "dm" (Deathmatch)
set scr_visualguide_gametype "RE" //set to your gametype you wish to change

Start the server

Join server

Login

/rcon login password

change map

/rcon map mp_airfield

Then change gametype to vg (Visual Guide)

/rcon g_gametype vg

then restart map

/rcon map_restart

