This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 883490.
The synopsis does not appear to match the guideline itself. The guideline primarily addresses behavioral protocol- what not to do. It doesn’t explain what social media is, as described in the synopsis.
As discussed with a colleague, I see no problem with the filter “before” because this is a guide you would read in order to prepare yourself.
Regarding the use of the term “businesses”, I believe the term here refers to the target audience (companies, local businesses etc) and I think this is a good term as I believe this guideline is also relevant for businesses other than ProRail.