Automatic notification on defects recording

Hi,

I have observed that on defects recording system is automatically generating quality notifications with type F3 regardless of defect severity.

can you please advise, how i can limit notification creation based on defect class? I need notification creation only for major defects.

I have checked the defect class and all the defect classes are selected with option "No Next Function". even then notifications are generating on defects recording.

Please advise.

Regards

CR