Customize Timeline Process

App Exchange Link:

https://appexchange.salesforce.com/appxListingDetail?listingId=a0N4V00000HDmgaUAD

Asynchronous Process Manager / Creator

AppExchange link (free app):

https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3u00000PuKbREAV