You can change the status of customer consent to double opt-in in the workflow. This can affect customer account to confirm that user actually wants to receive communications from your brand.
To add the Set Double Opt-In action to the workflow, click on the "Set Double Opt-In" icon.
To set the parameters, click on the node.
The settings window will appear.
Insert the name of the node.
Choose type of double opt-in and select the status to be set for the customer.
When everything is set, click on the "Confirm" button.