The Bear Toolbox documentation clearly states that “the easiest and safest way to create the data for your own project set is to use the ‘data.xlsx’ spreadsheet and adapt it to your own dataset”.
To understand the format for arranging your own data in the "data.xlsx" sheet, please refer to the chapter 2 (page 7 onwards) of the attached Bear Toolbox user guide. This provides a comprehensive explanation of importing your own data to use the “Bear Toolbox” and mention all the rules to follow for organizing the information inside the excel file.
Bear Toolbox User Guide: