There are two methods to copy a spreadsheet:

• Copy your own spreadsheet just by using menu ‘Main’ -> ‘Save spreadsheet as new’.
• Copy someone else’s spreadsheet by adding postfix ‘/copy’ at the end of address of the published spreadsheet, e. g. ‘https://totalsheets.com/spreadsheet/gyrf6G9e2JS8/copy‘. Please remember that only published spreadsheets can be copied. Owner of a spreadsheet also needs to select ‘Allow spreadsheet copy’ in the ‘Publish spreadsheet…’ dialog.