OTClient shader on map

[bpm91]

Hello, could a good soul teach me how to make a shader effect on the map? I know it already has otcv8, but I have no idea how to activate it in the correct places.
tfs 1.5 - otcv8

 

[Lbtg]

curiuos also, how to activate it on certain x/y/z -x/y/z as example for certain duration

 

[bpm91]

curiuos also, how to activate it on certain x/y/z -x/y/z as example for certain duration

That's what I wanted to know, how to activate a position in square meters, and other things...