@ldiaz Depending on how many options you’re wanting to give the end user you could add multiple parameter options with the “Or” clause. like this.
If you do go this route, make sure you leave the first option in each drop down blank (NULL) so the user has the option to leave one or more of the options unselected.
If you’re planning on giving the end user a lot of options on the dropdown, I would agree with @NateS to use a Dashboard to control this. You can add a dropdown filter then customize what values it displays. It takes a little bit more work but it will be a cleaner option in the end.
Good luck,