as excerpt to be shown on the front page, let's use:
On Thu, Jan. 23, 2020 at 10am ET/4pm CET, we will be discussing how to build local DH RSE communities. We will talk about questions such as how you can go about finding like-minded people at your institution or area or what methods have people successfully applied to build a DH RSE community?
in the third sentence, it should be:
Or are you working in a group of DH RSEs or have you successfully mastered creating a local DH RSE community?
Two small things: