The following questions (2 through 9) refer to the case of Krasniuk v. Gabbs, 2002 MBQB 14, as summarized https://www.canlii.org as resources, answer the following questions:

2) The case involves the sale of a home. There were several agency relationships that arose out of the house sale and the subsequent court case. For at least three of those relationships, identify both the agent and the principal.

In this question, I find it difficult to identify the agency relationships. How to identify agent and principle?