Syncthing to sync another data set

Was follwoing https://www.youtube.com/watch?v=PCYvsLSStbA
Is there a guide to install syncthing on one dataset/pool and share a different one ie:
pool 1 /mnt/data1
pool 2 /mnt/share folder

Main reason was thinking i’ll keep my apps on one pool/drive and have all my data on onother.

not that I know how but I’d yes is possible. But then again, are your 2 NASs in different networks, like via internet ?
I misunderstood the question. Yes you install it anywhere you feel like and in Syncthing point to any place you want to.