The CommandManager can be used in 2 ways. Either by binding a default command to one event on the control, or by binding a group commands to several different events
<Button Content="My Button"
cmd:CommandManager.EventName="Click
cmd:CommandManager.Command="{Binding MyCommand}"
cmd:CommandManager.CommandParameter="My Command Parameter"/>
Or
<Button Content="Change Command">
<cmd:CommandManager.Commands>
<cmd:CommandGroup>
<cmd:CommandBinding EventName="Click"
Command="{Binding MyCommand}"
CommandParameter="My Command Parameter"/>
<cmd:CommandBinding EventName="MouseEnter"
Command="{Binding MyOtherCommand}"
CommandParameter="My Other Command Parameter"/>
</cmd:CommandGroup>
</cmd:CommandManager.Commands>
</Button>