Areeb Iqbal developed a user-facing chart customization feature in the mixpanel/docs repository, focusing on enhancing the X-axis of Line and Column charts by introducing a weekend visibility control. This addition allows users to hide weekends for clearer data presentations, addressing a common need in data visualization. Areeb implemented the feature with attention to UI/UX design and ensured comprehensive documentation updates using Markdown, co-authoring guidance to support onboarding and cross-team collaboration. The work demonstrated depth in both front-end customization and technical writing, resulting in a seamless integration that improved user control and reduced adoption time for analysts and end users.