From the Old Gen forum....I am thinking this should work fine.
INSTRUCTIONS on how to input sliders for 'Play Now'
1) Input sliders into your main menu slider section (For both HUM & CPU)
2) SAVE both sets of sliders (HUM & CPU)
2) Go to 'Game Options' and change 'Skill Level' from 'Custom' to 'All-Madden'
3) Go back to your slider settings and LOAD the sliders you just saved (For both HUM & CPU)
For CFM, set the sliders before going into CFM, set all Madden within the CFM and then go to the sliders section of your CFM and load them.