Start a saved campaign when you are ready for the selected lead to receive its planned follow-up.
Steps
Open the lead in Lead Details.
Open Quick Actions > Manage Campaigns.
Select Add Campaign, choose the correct event and use Choose a Campaign.
Review the campaign's messages, sender, timing and reply behavior.
Select Start Campaign only when you intend to begin that follow-up.
This can schedule real messages
A message timed from Automation Start Date may become due as soon as you start the campaign. Check for another active campaign before starting a duplicate. Starting one for this lead is different from enabling a reusable campaign for future matching leads.