After adding a new schedule or modifying a schedule for a process in the Atom Management page, the scheduled process did not run. The issue may be specific to a process deployed to the atom and other processes deployed to the same atom might be running according to their schedules.
In this case, you may want to check for any trailing space in the entries for Hours, Days of Week etc. options available in Advanced Type.
This issue has been documented and resolution can be tracked in Known Issues section of Boomi Community Page. Search for BOOMI-11314 or follow this link: BOOMI-11314: Advanced schedule type does not execute if there is trailing white space