Hey Fred,

I am really sorry for the delay of this reply as it is a weekend for us here. It seems like these new fields aren't added to the group category, https://s3-ap-southeast-1.amazonaws.com/imarklee/screenshots/Monosnap_2017-10-15_13-14-18.png

I have added them into the category and you should now be able to choose the event features when creating the group