Hi Rikki,
I assume you are referring to GRS, RA-GRS, GZRS, or RA-GZRS. The answer is No, you cannot set a specific secondary region. The secondary region will be the region pair of the primary region. Please see article below for a list of regions and their region pair:
Azure paired regions
Please click Accept Answer and upvote if the above was helpful.
Thanks.
-TP