There are two ways that can help you with this action:
The first is by clicking on "Mappings" on the left tab of Mindmatch and selecting the desired mapping. After that, just switch from "General view" to "People".
Another way to do this is by clicking "Import People" and downloading the import template. After that, simply select the file by clicking on the icon and then import people on the icon .
At the end, click "Send emails" also under actions to send the tests to the candidates. Select the option "Everyone who has not received an invitation yet" since it is inserted in a process in progress, you can edit the text and finally, click on the send icon .