This report will export the guests that were created between a specific time-frame.
To access this report click on "reports" then "custom reports"
The report you are looking for is the "National - Guests" report.
To utilise the report click "run"
You will then have to enter the specific date range and then choose how you would like the report to output to (see below)
The Web (Html) option will display the report content as a web page whilst the Excel option will download the data into Microsoft Excel. Once selected the report content will display.