Use Prohibited Region , set its option to prohbited the copper

@usersupport okay thank you for the response. However after applying the prohibited region on my pcb, i don't see the changes made on 3d and 2d viewer. Is there a reason for this?(because i heavily rely on 3d view to observe physical changes to a pcb for reassurance). or should i just trust that changes have been made and i can just send my gerber file to fabrication.

@usersupport FYI, my second problem seems like its been solved. The changes done for prohibited region can now be observed through 3d viewer. No idea why it didnt work before but all of a sudden its now working. But thank you for your help.

You need to rebuild the copper area

@dazzelchad, "...should i just trust that changes have been made and i can just send my gerber file to fabrication." Irrespective of whether you are using EasyEDA Pro or Std, you should **always** check the Gerbers before you send anything off for fabrication: [https://docs.easyeda.com/en/PCB/Gerber-Generate/index.html#Gerber-View](https://docs.easyeda.com/en/PCB/Gerber-Generate/index.html#Gerber-View)

@andyfierman Yeah we all know that thank you.