To do this, you will need to setup a new Other Payment Option in Toast.

Click to add a new Other Payment Option and fill in the details.

Once you've setup your payment, grab the Payment GUID.

Make sure you hit Publish Changes.

Then in the Control Panel under the Toast integration, enter the Guid under the House Account Tender GUID settings on the integration.

Now when making a payment, instead of hitting House Account, click Other. 

This will then display the Peoplevine House Account option.

When you click on Peoplevine House Account, you will be prompted for tip (if you chose that option) and then it will close to Peoplevine as an invoice.