Final answer:
To use a QBs file on a second computer, ensure a valid multi-user license if needed, transfer the file through an external device or network, and ensure the same QuickBooks version is installed on the second computer. Utilize QuickBooks' backup and restore feature for safe data transfer.
Step-by-step explanation:
When you wish to use a QBs (QuickBooks) file on a second computer, you should first ensure that you have a valid license for multi-user access if necessary, and then you can either transfer the file directly using an external device such as a flash drive, or you can use a network setup that allows files to be shared between computers on the same network. It is also important to have the same version of QuickBooks installed on the second computer to avoid compatibility issues. Additionally, you may want to consider using QuickBooks' backup and restore feature to safely transfer your company file and ensure that your data is not lost or corrupted.