Real Time and / or Service

[nino]

Good morning. I am new to the Forum and I am also new to using FreeFileSync. However, I already have experience with other similar software.
I need some clarification on the use in Real Time and / or Service:
- I have to perform about ten separate synchronizations between Desktop and NAS (QNap). I have prepared about ten distinct ".gui" Profiles. I also created about ten ".ffs_batch" files and as many "ffs.real" files.
- Is it correct to say that multiple "ffs.real" files cannot be started at the same time? Is the only one that works only the first one to be started?
- Even as a Service is it possible to start only one file (be it "batch" or "real")?
- Every time a change is made in the source directory, does the entire comparison of the two synchronized directories restart? And that is, that the process also concerns the check of all the other directories and / or files not subject to changes?
- To start as a Service I did not understand where to intervene to change the user to "System".
Thank you.

(google translate)

[xCSxXenon]

I run multiple RTS configs fine
You can run multiple sync configs at the same time, manually or with Task Scheduler
Read the documentation