Hello. I am a Korean office worker who was introduced to PCB. I received a PCB sample through PCB out_sourcing. As a result, I received a Gerber file, a schematic PDF file, and an Artwork PDF file. There is a part that I want to modify, so I want to modify the Gerber file along with the schematic modification. Are these features in Easyeda? If not, it would be appreciated if you let me know how to fix it in other ways. Thank you.