Observation checklists for multiple sites

I am trying to create an observation checklist for Safety SWOPs. The organisation has multiple locations across the country and I want to use the same observation checklist for all locations. I have done the following set up in Docebo:

1. Created a observation checklist.
2. In the ‘Schedules’ tab, created three separate schedules for each location (using ‘User Groups’ to filter users of that location) and assigned an observer to each group.
3. Added the observation checklist in an eLearning course. (The course two components, eLearning and observation checklist.)
4. In the course shell, selected the same external observers I added in the observation checklist.
5. Set the completion criteria to ‘Upon conclusion’.

The problem: When a user completes the course, the observation checklist is sent to observer. However, all observation checklists are sent to the observer of the first group, even if the user was from a different group.

Is this the right set up? Can someone help me better understand how to set up observation checklists in the system?

Thanks in advance!