Hi elcac36 and welcome to Mylio. It is a powerful tool with a fast learning curve.
My setup is quite simple.
I installed Mylio on my Mac Mini.
Because of limited memory on the Mac Mini, I do not have photo originals on it.
I had a very large photo library from using Adobe Lightroom on an external disk drive.
I wanted to continue using Lightroom with this external disk.
That is why I used “import from external drive without moving” and choose my Main Lightroom catalog folder as Source folder.
Be aware, that Mylio makes such drive a vault, so you need sufficient free space on the drive if you have other photo sources e.g. from you mobile telephone.
In the Dashboard I have set the Mac Mini to only have previews, so the memory usage there remains acceptable.
I have two more external drives as pure vaults for Mylio to back up all photos.
For me, this setup works very well. It allows me to take along my Lightroom drive when I stay in my country home, where I have an iMac with Mylio installed. This way I can work both with Mylio and Lightroom on my photos.
If you have more questions, don´t hesitate to come back to me.