Meetup is an event organising site for creating regular gatherings based on a wide range of topics.
To import a meetup group into placecal simply copy the base meetup URL into the PlaceCal calendar URL and save. PlaceCal will detect the Meetup calendar and act accordingly.
For example this URL: https://www.meetup.com/qas-agile-learning-culture-meetup-group
How to add a calendar to PlaceCal