One can easily highlight non-working periods on a Microsoft Project schedule Gantt chart using the non-working tab of the Timescale dialog, but do you know that you can use the same feature to highlight working periods?

For those who have used the curtain facility in Primavera P6 to draw attention to working time periods in their schedule and want something similar in Microsoft Project, this YouTube video outlines steps to follow and includes how to use textboxes to label the shaded periods.