4K Video Editing - Best 2 Drive Configuration

[luckydog125]

I just purchased a new iMac purely for editing 4K footage that I am capturing using my Mavic Pro Drone.  I purchased the Mac with an internal 500GB SSD drive and I also have an external 4TB drive (not SSD and probably slow).  I am not sure how to set up projects to take advantage of the power of the internal drive while ensuring all media is stored on the external drive so as not to use up the space on the internal drive too quickly.  I am sure this is a simple one so any help for this rookie is much appreciated.

[exile1972]

watch this video and you'll get a good overview of how to properly set up your drives for optimal workflow with Premiere:

https://youtu.be/r7zI7MYSY_0