Normally, the "Assessments" section on page 2 of the GCMS/ATIP note will let you know where is your current stage eg. Eligibility, Security, Criminality, Medical, and Info Sharing ..... If you case is under security scanning, the "Security" will show "In progress" and you can scroll down to other pages to see the details of every member of your family. Moreover, you can go down further to the "Notes" section to see the notes/remarks from IRCC officers/Offices with all details such as dates, comments, etc... and you can compare them to your timeline or know which stage where your file is.
thanks, a lot for details, so we may be in security check even if all co-founders submitted medical checkup report or we may consider our self passes this stage already and waiting for example for ADR2 about business progress