To change the day program for one or multiple days in Yearly View from Team Manager, go to Operations - Team Manager, right-click on an employee cell and click Yearly view.
Accessing the Yearly view of an employee in Astrow Web
This will open the yearly view of the person. Select the cells you want to change the day program for and click Actions -Change day program (or right-click - Change day program):
Changing the day program for multiple days in Team Manager - Yearly view in Astrow Web