All plugins required have been zipped into your download package, so all you need to do is click on the “Begin installing plugins” link.
You should be navigated to the Install Required Plugins page. With SquareRoot you will need to install 3 pluginsContact Form 7Meta Box, and Pricing Table Plus.

install plugins

Click on the box beside “Plugin” label to select all plugins in the list, then choose “Install” from the drop-down list at the top and then click “Apply”.

install action

The installing process status will be shown in your browser. It may takes a few minutes, so please be patient.

install plugins

When the notice “All installations have been completed” appears, click on the Return to Required Plugins Installer link under it to turn back to the plugin list. Click on the box beside the Plugin label again to select all plugins and choose “Activate” this time.