You can use a VMware Fusion command to send the Ctrl-Alt-Delete keystroke combination to a Windows virtual machine.

You can send the keystroke combination in any of the following ways.

Select Virtual Machine > Send Ctrl-Alt-Del.

If you are using an external PC keyboard, press Ctrl+Alt+Del.

On a full-sized Mac keyboard, press Fwd Del+Ctrl+Option. The The forward-delete key has a right-faced arrow with an X in it. Forward Delete key is below the Help key.

On a Mac laptop keyboard, press Fn+Ctrl+Option+Delete.