I have been working in DIP9 for awhile, but I have never been able to figure this out and I think I must be missing something obvious:
When I create layouts, I usually create at 12x12 size at 200 resolution because my computer works faster at 200. I go into File>New and manually type in 12x12 under Select a Canvas Size (it's defaulted to 6x4). Then I go into Advanced Options where it says my image size is 12x12 and my pixels are locked at 3600x3600. My resolution is defaulted at 300 so I manually change the resolution to 200. When I click "done", my image size automatically increases to 18x18! I have to manually change it again to 12x12 and click Done. When I go into Format>Resize Image, I can then confirm that I'm at 12x12 with 200 resolution.
When I tried to create a 8x8 project, I did the same steps as above, inputing the 8x8 image size and under advanced options, when I tried to change the resolution to 200, it automatically changed my image size to 12x12!
I guess I don't understand how to work the image size, pixel dimensions and resolution together when creating a new project. If I want to change the layout size, should I have resolution locked or pixels locked? In what order should I be changing and/or locking these things when I create a project? Am I ever supposed to mess around with the pixel dimensions or should that always be locked?
Obviously I am very confused

- I just hope I was able to explain it OK so that someone understands me and doesn't think I'm a nutcase.
Andrea C.