Should applicants focus on one of the categories of Science of Engagement projects or can they focus on both?

Applicants may focus on one or both categories within a single project. Applicants only conducting measure development are limited to $0.5m in direct costs. Applicants developing and testing engagement methods may request up to $1.5m in direct costs.  Applicants conducting measure development AND developing and testing of engagement methods are also limited to up to $1.5m in direct costs.