The settings in the Develop module are defaults. If needed, you an change the default settings. The new user default settings will be applied to your photographs. You can revert back to the Lightroom defaults at any time. Do the following. 1) Press d to go to the Develop module.2) Press the Reset button in the lower-right corner. 3) Adjust the settings. 4) Press and hold Alt. 5) The Reset button will change to Set Default. 6) Click Set Default.ou can revert back to the Lightroom defaults at any time. Do the following. 1) Press d to go to the Develop module. 2) Press the Reset button in the lower-right corner. 3) Adjust the settings. 4) Press and hold Alt.