Storewide Sale for WooCommerce is a robust extension that simplifies the process of enabling sales for multiple products in bulk. Here's a breakdown of its key features and usage:

Key Features:

1. Bulk Sale Enablement: Enable sales for multiple products in bulk with just one click, saving time from individually adding sale prices.
2. Sale Types: Choose between setting the sale as a fixed reduction value or a percentage off the original price.
3. Sale Scheduling: Set specific start and end dates for the storewide sale, allowing you to schedule sales for specific periods.
4. Inclusion/Exclusion: Selectively include or exclude certain products, product categories, and product tags for the storewide sales. This customization offers flexibility in managing the sales.
5. Storewide Sale Notification: Customize and enable notifications for storewide sales, displaying them at the top or bottom of the page.

Usage:

1. General Settings: Configure general settings for storewide sales. Override individual product sales or apply them in conjunction with storewide sales.
2. Global Sale Settings: Set up global sale settings such as sale discounts, type (percentage/fixed), and specified start/end dates for the entire store.
3. Control Settings: Control inclusion/exclusion of products, categories, and tags in the storewide sale, giving fine-grained control over which items are included in the sale.
4. Notification Settings: Customize and activate storewide sale notifications, informing visitors about ongoing sales on your site.
5. Category-Wide Sale: Allows setting sales for entire product categories for a specified period, a feature not provided by default in WooCommerce.

Overall, Storewide Sale for WooCommerce streamlines the process of implementing storewide sales, allowing for granular control over sales settings, scheduling, and notifications, enhancing the shopping experience and potentially increasing revenue for online stores.