Step 1: Log into our Bill.com test org. Under setup, Enter the Package Manager text in Quick find and select the Package Manager in Package Org.
Step 2: Click to open the ASBill.com package and select the version tab.
Step 3: Click the recent released version link. for example 1.2 version above the picture
Step 4: Copy Installation Url
Let’s say example
Step 5: Login the customer user org if we want to install or upgrade package and paste the installation url in new tab
Step 6: Click the Install button to install package