Elements of consultation provided by physical therapist or levels of consultation are listed below;

Service based consultation (say direct patient care services provided in rural hospital on a temporary basis)

Needs based consultation

Relationship based consultation

Trust based consultation

Your question is entirely too broad and must be narrowed. It will also be difficult to answer because standards generally do not exist. However, this will answer a small part of your question: Froment et al. Large variability found in musculoskeletal physiotherapy scope of practice throughout WCPT and IFOMPT affiliated countries: An international survey. Musculoskelet Sci Pract. 2019;42:104-119.

From a practice point of view, some countries recognise consultant physiotherapists as those who have a PhD, or are very experienced in their field (over 20 years of practice). However, it may not apply to all fields. As Stephen M. Shaffer suggested, the question needs to be narrowed.

Thanks for answering my question

I would refer you to the Guide to Physical Therapist Practice that was created by the APTA

Guide to Physical Therapist Practice. Second Edition. American Physical Therapy Association. (2001). Phys Ther, 81(1), 9-746.