If you'll be making more than a few TMS-RGB v2 boards—especially if you'll be selling them and don't want to leave traces of solder on the boards—it might be worthwhile to create a test jig to speed up the process. The only tools required for building one are access to an FDM 3D printer, a soldering iron, and a screwdriver.
That should be it. When using the jig, it's best to locate and depress the board with your hands while actuating the plunger (as shown in the video). Otherwise it tends to knock the board off to the side. Do the same in reverse to prevent the board from popping up suddenly.