How to replace THIS icon? {changing the idle (not working) worker icon}

[Asteroth]

Hello i would like to ask how exactly to replace this icon.

 

[Elmo]

Object editor. Art Interface. Hang on, I will post a picture.

EDIT:

 

[Revolve]

What he meant is the "Idle Worker" icon I tihnk
To change that, go to Game Interface > Icon - Idle Worker. Here you can change it to whatever you want

 

[Elmo]

sorry, I must have misunderstood the picture

 

[Asteroth]

thx for help