Sage drive question

I have sagedrive set up on there computers, the main and 2 remote.

I need to swap the status of two of the computers, so that one of my remotes becomes my main and the former main becomes a remote.

I need to do this because e reconcile only works with the main site, not the remotes and I currently most of my work is done on a remote.

Can anyone tell me how to do this?