Build a document template from Google Sheets, Slides or Docs, and add merge tags like, for example: {{First Name}}, {{Last Name}}, {{Date}} .
Create a Google Sheets to store your data, and add a column for each information you want to merge into your generated documents: First Name, Last Name and Date.
Open Publigo from your data spreadsheet, select your template and your target Drive folder where all your generated documents will be stored.