It's all clearly explained with examples in that post.
For restartround and alltalk:
Code:
"!rr" "sv_restartround 1" "c" ""
"!alltalk $1" "sv_alltalk $1" "c" ""
You need admin kick flag to use these commands.
To change sv_alltalk to 1 you need to write in chat !alltalk "1"
I don't know your noclip command.
You need to save it in addons\amxmodx\configs\say_macros.ini