Camille Wood, left, and Lizzie Myers rehearse a scene from “Complaint Department and Lemonade,” that Humboldt High School students will stage for senior citizens in a dinner theater setting Thursday evening and then for the public at 7 p.m. Friday. Seniors need only to call the school to announce they will attend. Admission of $4 for adults and $3 for students will be collected at the school’s auditorium Friday evening.