I’ve been asked in on brainstorming sessions, to backup other consultants, and to bring my voice or opinions in on projects that I may or may not be fully executing. In many cases people just want to know they are heading in the right direction, sometimes it’s to just get a second opinion, in other cases it’s to feel out if they want to hire me or someone else for a big project. In any case I’m considered an adviser.
The unfortunate part of hiring more then one adviser is that they may have conflicting opinions, not that either opinion is wrong but...