Alright, last week my crew had an issue with one of the Marshalling trainers on our wing. I didn't recert for Marshalling after several years of being sick of parking planes and dealing with lears in the early morning. So, they wanted fresh blood. They randomly picked one of our guys who didn't know about seniority situations like this. He said was forced to take a 30 minute class of watching videos of Marshalling etc after our work time was over. Five months have went by and the woman who certs people demanded him to Wingwalk a plane. This guy has never stepped foot out on the field, nor taken or parked any plane. He was never given training properly, and said to her "I'm uncomfortable of this, and I don't feel SAFE", Also he noted he had more seniority than two other guys on the crew by 2 years. She said "I don't care, you're doing this and I'll be walking out with you" Is this woman allowed to do this to a person that has higher seniority and doesn't feel safe on the situation? My union steward said it's Ramp seniority and not crew seniority. That they cannot make people with higher Seniority on the RAMP Marshal and only the bottom people of the bottom have to, even if it's from later start time crews that's all on one crew or split up. What do any other Stewards think about this? Is my Steward right? What can we do about this demanding woman?