How to add a vendor name to customized summary of activity report for last fiscal year?

Hi there, @lwf1.

Can you share with me more details about the report that you're trying to customize? This would greatly help me in providing you the steps on how you can add a vendor name in the line item for that report.  

For now, you can run other reports such as Expenses by Vendor Summary report to show your total expenses for each vendor. Or else, open the Transaction List by Vendor report to view the list of transactions you've made to your vendor.

Just follow these steps to run these reports:
 

1. Go to Reports.
2. Look for the Expenses by Vendor Summary or Transaction List by Vendor report.

In addition, you can customize these reports to easily review the transactions that matter the most to your business. You can also memorize them to save their customized settings. 

Please let me know if there's anything else I can do to be of assistance. Just place your concern by clicking Reply and I'll get back to you. Wishing you and your business continued success in all that you do. Have a great weekend.