The phrase "to attend the seminar" means to go or be present at a special meeting or educational event where people gather to learn and discuss a specific topic. Full definition
She continues her on - going education by attending seminars on dog behavior and veterinary care. (ngvetspecialists.com)
She continues to broaden her base of knowledge by attending seminars given by the top instructors in the fields of obedience and agility. (boyetteanimalhospital.com)
If you have been taking classes, getting training certifications, or regularly attending seminars in your field and it isn't on your resume; maybe it should be. (exclusive-executive-resumes.com)