Use the right format as answers in your questions. Download here
Update the file according to provided excel format & fixed answers (see different tabs in file above): Challenge, Sub Categories, Solved by + Budget, Region, Number of Employees
Go to Advanced Settings > Challenges/Solutions
Add your different Main Categories = Groups
Add groups> Save
View example below
5. Upload your Excel file. Select what kind of data you are importing in the dropdown.
6. Match all the fields from your excel with the ones available in the tool. And click Complete Import
7. Repeat this for both sides Data for solvers, and for Data for attendees having problems.