Hi Deepika,
copy the file to ...\SOI\SamUI\custom\console\config.
Then clear the Java cache and restart the console.
The path in the comment is not very clear, and there are multiple directories, so I also used the wrong one first.
Sorry about the confusion.
I will recommend to the Documentation Team to make this more clear.
I think the icon also has to have a specific size (16x16). For testing I used one of that size nd all worked fine.
MichaelBoehm