Flow Pro 2 horse tracking question

I purchased the flow pro 2 and am trying to use the horse tracking feature to film myself while riding. I'm wondering if there is a way to select the horse that you want to track and start recording remotely?

I'd like to be able to set up the Flow, then get my horse ready and mount, and then once I'm in the arena, select my horse and start recording from horseback (our mounting block is in a different location from our arena).

My hope is to not need assistance from another person to get the recording started. Is there a good method to do this?