There are three programs in the software bundle included with the DS107+.
You begin to work with your newly bought NAS device by launching Synology Assistant.
When started for the first time, the program proposes to search for new Synology devices. Then you can choose a device, load firmware into it and run a preliminary setup procedure (see the screenshots). Afterwards Synology Assistant will allow you to perform certain operations with Synology devices in a visual manner: search for new devices, attach network disks, set up a network printer, etc.