Modifying schedules is super simple.

1.  First you must access the schedule you wish to modify.  There are two ways to access existing schedules from the dashboard or the menu.  

From the Dashboard

1.  Click on the vsb icon (red square) on the schedule you wish to modify in the Your Current Schedules panel (see below)

2.  You will be taken into the schedule and you can make the necessary modification

3.  The schedule is automatically updated and the status goes to Modified

4.  Once you've completed all the modifications and wish to send it to staff click on the Send Changes to Staff icon this will send the changes to all staff who have been affected by these modifications