If upgrade is available for your current version of To Do List then it will be indicated at the top of the upgrade instructions.
No Upgrade Needed - You have the Latest Version
Upgrade Available - There is a new Version for Upgrade
Step 1 - Check your version
Listed at the top of the Upgrade window will be your current version. If your current version is the same as the one listed for download then no upgrade is required.
Important Note: If you elect to upgrade to a new Major version of To Do List you will be required to purchase a new licence of the product. A Major version upgrade is indicated by a change in the major version, for example from 'v2.0.18' to 'v3.0.1'.
Click on Download to access the latest version. A new version of To Do List will be downloaded to your workstation. Once complete you should be able to find that file 'To_Do_List_vX.X.X.xlsm' in your Downloads directory unless you elected to save the file to another location.
For details on inclusions to the latest version see Release History
Step 3 - Startup
Once downloaded open the new version of To Do List. If you have previously registered and activated To Do List you should not be presented with those screens again. The Startup worksheet will be displayed with any new options for To Do List menu available.