Duplicants do nothing

Hello @YGonzalez, welcome to the forums. Attaching your save file could help the devs determine what's causing idle dupes even when there are several tasks assigned. On the other hand, make sure that the dupes have navigation to reach these tasks you assigned. Method to find your save file: 

Oxygen Not Included Save Files
There are situations where we may ask you for a copy of your save file. You will be able to find your save file in the documents folder at \Documents\Klei\OxygenNotIncluded\save_files

Attach yours in your next reply. Cheers.