Click on Connect to QuickBooks and login with credentials.
On clicking Connect to QuickBooks, you will be redirected to the login page of QuickBooks Online. Provide your credential and login to the application.
Select the Companies and Click Connect.
Once you login to the QuickBooks Online, you will be asked to select the companies to connect. Select the companies from the dropdown menu and click on Connect. You can connect multiple companies from QuickBooks with Online Check Writer.
Click on Import.
Now the companies are connected with Online Check Writer. A QuickBooks import Button will appear on the Checklist page. You can import the checks from your multiple companies from QuickBooks with a single click.