Create a structured Focus Group data gathering plan for researching digital marketing. Write in a {{tone}} tone. Target audience: {{target_audience}}. Research goal: {{goal}}. Industry context: {{industry}}. Present as numbered steps with action title, instructions, outcome, and pitfalls. Cover: Data Gathering Objectives, Focus Group Methodology (Approach Design, Instrument Design, Sampling Strategy), Data Management (Collection Infrastructure, Data Cleaning Protocol, Data Organization), Analysis Preparation, Reporting Framework, Timeline and Resources. Maximum 1500 words.