If you are working as a DIT like I do your often asked to sync the secondary sound from the set to the dailies. In prior versions of DaVinci Resolve this was an easy task. First you created a folder in the Media Pool. I would give it the same name as the card for simplicity. You would then import the video media into that bin. You would then import the matching audio sound files that share the same timecode into that bin. If you wanted to you could make a sub-bin in the main bin for the files for neatness. Once both the audio and video files were in the bin you would select all the video clips and right click to choose the option to Auto Sync Audio based on Timecode and your embedded camera audio would be replaced with the multi-track wav file from the sound dept. But if were to try that today using Resolve 12 (Which is still how the manual teaches how to do it) you would find the option to Auto Sync to be greyed out. This can cause a small panic when you have lots of dailies to make in a short time. The answer, found by pure luck, is to right click on the Bin that you created to place the Audio and Video media into. Then you can see the Auto Sync options for Timecode and Waveform available to you and working just as before. Hopefully this change will show up in the manual sometime soon.