Upload the list from Excel.
Now you have your clear list, and you can start to add items one by one. One by one? Well, this is one option. But if you already do have the information in an excel sheet there is nothing easier than uploading the Excel spreadsheet with couple clicks. Believe me, you save hours! Rember, you need to define tables to import as a list. How to do that? Open the Excel document, Select the cells to be included, select the data, and click 'Format as Table'. After saving, return to the customization tab and click 'Refresh'.