I need someone to guide me on how to make 4 different density images of the same file.

I need someone to guide me on how to make 4 different density images of the same file.

Cancelled

Job Description

Hey, I am in charge of development of an Android app. My graphics guy doesn't know how to deal with the whole density issue. Once I hire you for this job, all you need to do is to contact me via Skype, and explain to me how exactly to do it in Photoshop / Illustrator, so I would explain my graphics guy how its done. Also I need you to send me a capture video clip of your screen while you make those 4 density images as for example. I just need this general support for this simple issue.