I can't barely even understand what does it seem supposed to "Select no more than 5 boards at a time". I'm having a hard time figuring out on this, it does hard to search on bitcoin's search engine. I can't find topics which I was lost to read, and now I wanted to read them again 
They need to fix this soon out.
It's the usual lack of time spent on explaining things they dont want you to do as you are supposed to "just know" wtf is going on. Very poor software always has these types of issues as they just cant be bothered taking another couple of steps to show people. This is evident by the fact more than one person asks the same question. You would wonder why even dangle the carrot with a search box if this is the only result. Talk about "folks are dumb where I come from" type of programming. They need to fix this soon out.