A flexible and reusable multi-select dropdown component with nested group headers for OutSystems Reactive Web Apps.This component allows users to select multiple items, organized into groups.
Key Features:
Group headers with a checkbox: selecting a group selects all its items
Auto-deselects the group header if any item is unselected
Selected items are displayed at the top with a cancel (×) button to remove
Responsive and lightweight design
Fully customizable using an input list