Step 1. Open a new tab in chrome and type in about:memory. Look for the Plug-in (Shockwave Flash) and copy the number next to it. So for me its 3828.
Step 2. Open up your windows Calculator, make sure programmer is selected (Hit Alt+3 to open the Programmer Mode). Type in the number your PID gives you for your plug-in and click Hex. Figure B and C will explain.
Step 3. Open your cheat engine process window and look for the last three or four digits/alphabetical. So mines is highlighted in Red.
Congrats, you got the right process.