This can only be done manually, an automation is not possible.
Steps How To:
Go to Leadfeeder Web Application
Open Lead you want to send over to Web CRM.
Click "send visit" Button.
This will only create a new lead in Web CRM. You can not update an existing lead in Web CRM. If you want to use automation please use Zapier.
Please note: We can not prevent duplicates for companies that you already have in your Web CRM. You need to prevent the duplicates in Web CRM directly if possible.