How does a CP show proof to law enforcement or Court that Non Custodial Parent failed to exercise visitation rights?

Asked in San Jose, CA - almost 4 years

Court order states the following : Non Custodial Parent visits on alternate weekends from Fri. thru Sun, that he should also take minor on schedule extracurricular activities on Friday and Explorer police program on Saturday- on his schedule visits, NCP pick up at daughters home.If he failed to take minor to Friday activity twice consecutively or not, then Visitation schedule shall automatically begin 10am on saturday morning. This was added because NCP has a tendency to come in and out of minor's life. NCP failed to exercise his visitations as schedule for 5 months. I made our teenager available to him and would go as far as dropping her off after practice at his home. I had to take daughter to police program.Recently CS dispute has NCP wanting to reinstate original visitation order.