REGULATING PSYCHOLOGISTS IN NOVA SCOTIA SINCE 1980

In answer to your question, you do have two options available. The first and easiest is that the person work under your supervision, the second option is that they obtain a temporary registration on the Courtesy Registry.

I have attached a copy of the website for further clarification and information.

https://www.ns-rp.ca//?s=temporary+registration&x=0&y=0

Reference: 
out of province psychologist bringing candidate