Locking a playlist

You can lock a list to prevent changes from being made.

Make sure that the list to be locked is selected in the list pane.
Open the list properties dialog box, doing one of the following:
- Select the list icon in the event list, then click the Properties button.
- Right-click on the list and select Properties.
Click General, then choose the Locked option.
Click OK to close. The lock symbol appears.