Certain longer lessons can be over all breaks

Once you have created breaks between periods in this way
How can we specify the Long Breaks/Recess times?
all double (and longer) lessons are forbidden to be overt this break by default.

If there is such long lesson placed in the timetable already, it will be displayed with the red strip and you will see the note in Verification.

However, if a longer lessons from certain subjects can be over breaks, you can allow it in the subject's constraints:

Note:
- this setting allows longer lessons from the subject to be over all breaks set in timetable. If you wish to specify, that longer lessons can be over just some breaks (e.g short recess - 10min), but not over another (e.g. Lunch 45min), then you can use advanced card relationships. See: Double lesson cannot be over certain breaks