How to use dnsmasq.conf.add

Hello,

I have the following in a dnsmasq.conf.add file on my desktop:

server/netflix.com/184.169.139.227
server/theplatform.com/184.169.139.227

Three questions:

1) How do I get this onto my RT-N16? I have already set up JFFS in the admin settings. I have tried Putty SFTP but was unable to connect.

2) Do I need to modify permissions for the .add file once I have it on the RT-N16?

3) Can I disable JFFS once I have the file on the RT-N16? I would need to re-enable it if I ever needed to modify the file, I guess.

Thanks,

Tim