How to link customer and vendor on mobile?

I will purchase the products from the vendor and I will sell products for the same vendor. In Swipe ledgers, it is showing separately, but I want to show it in a single ledger.

Step 1: Go to the “Parties” and click on “Vendor.”

Step 2: Click on “Edit Option.”

Step 3: Scroll down >> Click on “Show All”.

Step 4: Click on “Link Customer.”

Step 5: Select the “Customer”.

Step 6 : Click on “Update Vendor”.