With reach and frequency objectives firmly in place, the planner turns to determining the media mix and selecting appropriate media vehicles to carry the message. The media planner must determine the way that the advertising budget is to be allocated across the relevant media options (e.g. 50% TV; 30% Mags; 15% Digital and 5% Out-of-home). To make these decisions, the planner requires a detailed understanding of the target market and its media usage habits. Accordingly, the design of the media channel strategy requires a rich understanding of the media options and what each type of media can accomplish in terms of audience reach and engagement.