This problem is driving me insane. It seems like it should be so simple, in fact the online help page for multiple panes even makes me more upset because it doesn't match what I'm seeing on the iPad app. When you open the secondary pane, there is *no* apparent way for me to change the resource.. Why?? I should be able to do so just like on the primary pane.
I'm having to do the most funky workarounds to move resources from left to right. The WORDsearch app does this with such ease, tell me I'm missing something.