Looking for a PTC mentor

We are a FTC team based in London formed last year and looking to improve our skills and be more competitive for next season. A PTC mentor would be really helpful as we have switched to using OnShape and feel that more CAD support and overall engineering design feedback would be really useful. I’ve checked the website however I’m not sure how to get in touch with a PTC mentor so does anyone know if I have to email or contact anyone specifically?