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Step one: define the energy range
Start by describing how loud the brand can get and where it stops. Energy is not one setting, so write three levels: baseline, peak and cooldown. Example for a fictional challenge show: baseline is quick and friendly, peak is celebratory shouting during a win, cooldown is a calm, honest debrief. Add one sentence about what the voice never does, such as mocking a contestant. This range gives editors permission to vary tone without drifting, and it helps new hosts understand that intensity is a deliberate tool used at chosen moments rather than constant noise.
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Step two: set sentence and vocabulary habits
Translate the range into concrete writing rules. Specify typical sentence length, how often exclamation marks appear, which slang is welcome and which words are retired. In the challenge-show example, titles use five words or fewer, descriptions open with the action, and jargon is explained once on first use. Include a short list of signature phrases for intros and sign-offs, limited to three so they do not become filler. Provide two before-and-after rewrites of real captions. Examples teach faster than adjectives, and they let a freelancer match the voice on the first draft.
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Step three: test, review and maintain the guide
Finish by turning the guide into a review routine. Ask each editor to check a draft against a short list: does the opening match the energy level, is anything off limits, and does the ending invite a next action? In the example, the team reviews five recent episode descriptions after two weeks, marks which lines felt off, and trims the guide accordingly. Keep it to one page, date each revision, and note who approves changes. A living document that stays short will be used, while a long manual tends to be ignored once production speeds up.