I tried to add one2Many field to form which using on front side of my Odoo website. This form will be registered to hr.applicant table and one2Many field's data will goes to calendar.event. In addition, I should be able to add extra lines for calendar.event. I'm trying to save all values to correct table but I just registered values to only hr.applicant table, one2many field is not saving anything.

https://ibb.co/ZdGfDgb

https://ibb.co/WvKdbS1

How can I solve this problem? Any idea?