I did the talk using Rstudio, roxygen2 and devotools. It was quick taking about 15 minutes. In the talk itself since it was such a small group we created an R package in real time together. It was simple.
After the talk I found a video where he build an R package. It also is about 15 minutes long
I think in the future when we have such a small group we will record the talk because the walk through I was able to do was really valuable.