Problem: The user wonders why some custom fields are in a separate grouping in the view's query dropdown selector.
Solution: The "event-location" and "event-time" fields are managed by Toolset but were not created by Toolset. These fields were added by another plugin. The fields created by Toolset contain the "wpcf-" prefix. Check this screenshot http://prntscr.com/v15u84
Toolset allows you to manage third-party plugin fields and allows you to add them to field groups, in order to get them grouped in the backend when creating/editing a post.
This is the technical support forum for Toolset - a suite of plugins for developing WordPress sites without writing PHP.
Everyone can read this forum, but only Toolset clients can post in it. Toolset support works 6 days per week, 19 hours per day.