Currently that does not look to be a supported feature. The recommendation would be to create two different campaigns and launch the second one only after the first has completed.
In these situations, we encourage you to start a conversation with our Product Managers by posting your idea in the SailPoint Idea Portal (https://sailpoint.ideas.aha.io/portal_session/new).
This portal is meant for collecting ideas and voting on items you would like to see in our products. You will be notified when a Product Manager reviews and responds to your post.
You can find more details on how to submit an idea on this (How To: Submit an Idea - Compass).