Syncing One Folder to 13 other folders?

[Osinedges]

I have one folder which contains multiple folders and files in each folder that I need to sync with the other 13 folders so that whatever is put into folder A gets synced to the other 13 exactly the same. However when I go to add folders it adds in pairs and it looks like when I press sync it's going to try and sync 1:1 on folder x > empty folder

Is this right or will this explode? haha

Really new to this software, I'm super confused, sorry if It's a dumb question.
Any help will be massively appreciated, thank you in advance!

[xCSxXenon]

You'll have to put the source location in all of those pairs, you can't leave them empty like that

[Osinedges]

You'll have to put the source location in all of those pairs, you can't leave them empty like that

Yeah this is my thinking, I don't want those folders to sync anywhere, I just want
the top left one folder to sync to the other 13
Folder 13 > Folder 1
Folder 13 > Folder 2
Folder 13 > Folder 3
Folder 13 > Folder 4 ... and so on.

I'm starting to think it's maybe not possible with this software?

EDIT: I am a fool, I've just realised what you meant by source folder. So my folder 13 needs to go all in the left there.... Damn I knew I was missing something...

[Zenju]

And select "mirror". You probably don't want "two way".