Excel Macros are required to complete certain courses on Kubicle, particularly the "Introduction to Excel Macros" course. You enable macros by following the instructions here.
If you are unable to activate macros (for example, if your organisation doesn't allow you to activate them) then you can't complete the exam in the "Introduction to Excel Macros" course. However, you can still follow along with the exercises. Any exercise workbook that uses macros has an accompanying workbook that functions without macros. These workbooks are prefixed with 'Non_Macro_Enabled_Workbook' and appear in the Exercise Files section of the page. If you have macros disabled, please use these files instead.