Add the users to the new security group(Mass Price Update: Administrator) to give access to the new menu.

Use the new menu Inventory -> Products -> Mass Price Update to open the wizard.

1. Select all products
2. Select the categories
3. Select the required products

More fields to make it simple

The Apply on field is used to select either Price or Cost to update the sales price and cost of the selected products. Set the percentage to be changed in the Change field. On the Apply type, select add to add the amount and reduce to reduce the amount. The current and new price/cost of the selected products will be updated asap in the list view.

An extra step for safety

An extra confirmation to avoid updating the sale price or cost of products by accidentally clicking the change button in the wizard.

Notification

Notification on completing the price update.