DaVinci Resolve - Saving
When you work with Resolve on your own computer, you can just click "save" and your projects get saved in a database on your own computer.
BUT, if you work on a Resolve project in a university lab or on someone else's computer, you'll want to save it in a way you can open it again on another computer ... and you'll want all the media to stay with the project!
Export Project Archive ...
File > Project Manager ...
right click on the project you want to export and choose "Export Project Archive ..."
choose where you want it saved
when asked, make sure you put a checkmark on "Media Files" for options of what you want to include in the archive
if you want to then upload the archive to Box, I suggest you right click on the archive folder and compress it to a zip file
when you are ready to work on the project again, download the zip file, unzip it, and double click on the project file in the folder (a file with the extension .drp)