If you didn’t create an automated action before configuring your approval process, you can create one directly from the approval process.
|Available in: both Salesforce Classic and Lightning Experience|
|Available in: Enterprise, Performance, Unlimited, and Developer Editions|
|To create approval actions:||“Customize Application”|
Open the approval process that you want to add an action to.
From the appropriate related list, click Add New. For an approval step where the Approval Actions and Rejection Actions are hidden, click Show Actions.
Choose the type of action.
The list of available actions differs depending on your settings and whether you have reached the limit for a type of action.
Configure the action.