Message Boxes
"Message Boxes" Actions are used to display a message to the User or to prompt them to provide input. Actions like "Display Message" and "Display Notification" are used to display informational messages for the User. "Display Input Dialog" can be used to prompt the User to enter basic input types like text and password, while more specialized input can be obtained through Actions like "Display Select Date Dialog" and "Display Select From List Dialog". Custom message boxes can be created through the "Display Custom Dialog" Action.
Read more about how to incorporate custom dialogs in Processes in this article:
Message Boxes Actions:
Display Select From List Dialog Action