Widget Title is the text going into the colored bar

Number of Posts is how many posts to display. Some designs work best with a value of 3.

Summary Length is how many characters to display from the posts’ content before cutting off and displaying an ellipses.

Individual Post View More Title is the text to display to prompt the user to read the rest of the post at its url.

View More Posts Title is the title of the button below the list that least to a listing of all the related.

Filter by Category can be filled with the event category slug you’d like to filter the returned events by. Note this is not the same as the title. See the Event Categories listing under Events in /wp-admin/ to find the proper slug.

Filter by Project allows you to find a project’s URL which then filters the listing by that project’s related events. 

You can change the style this lists of events is displayed in via the Display Style option in the Style tab.