Velixo NX (for Excel for Mac and Excel Online) can be added using Excel's 365's add-in feature:

However, when using Excel for Mac 2019 or earlier, the add-in does not appear in the search list:


Microsoft added support for function-based add-ins (such as Velixo NX) after the release of Excel 2019. Subscription (Excel 365) users received that update automatically. Non-subscriptions users did not.


For installations which are *not* based on Excel 365, Excel for Mac 2021 or higher is needed. Using a current version of Excel for Mac, the Velixo NX add-in can be found in the Office Store:

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