how can I make a custom report for vendor and category only?

You can generate the Transaction Detail by Account report in QuickBooks Online and customize it to display spending by vendor within specific categories for the year, PIdon.

Here's how:

1. Navigate to the Reports menu on the left panel.
2. Search for and select the Transaction Detail by Account report.
   
3. Set the Report period to Custom dates and enter the start and end dates to cover the entire year for which you want the data.
4. Click Columns and select the checkboxes for Vendor and Distribution account type, and any other details you want included.
   
5. In the Filter tab, select Vendor Name from the dropdown and then individually check the names of the vendors to include in the report.
6. Click + Add Another Filter and choose Distribution Account. Then, select specific categories that you want to include in the report.
   

Don’t hesitate to revisit this thread if you need more assistance.