MU-Plugins folder did not get populated with your dashboard install of multi domains

Hi, I just bought a multi site plugin "multidomains for multisite" for which I needed to download your dashboard for WP. Your dashboard automatically installed the plugin. However, according to instructions (https://premium.wpmudev.org/manuals/wpmu-manual-2/using-mu-plugins/), I needed to install a "mu-plugins" folder outside of my plugins directory first. I did so, but your dashboard installer placed it in the regular plugins folder. How can I fix this and start over? Or, were these just old instructions?