To privately invite candidates for a test, you can bulk invite candidates using "Candidate Banks". To create a candidate bank, follow the below steps:
Click on account settings on the top right corner. Choose Manage Candidates from the drop-down.
Click on the New Candidate Bank button, and create a new candidate group bank.
To enter candidates details one-by-one
Click on the Add Candidates option displayed aside the name of the candidate group.
On the new page that opens, click on the Add New Candidate button, and then enter the relevant details of the candidate. Once done, click on OK button.
To enter candidates details in bulk
Click on Bulk Upload Candidates button, and then choose and click on 'Upload' button to upload the file which contains the candidate details. The candidate list will be reflected in the candidate bank.
Refer the GIF below for the complete procedure