Note: This was originally posted by an inactive account. Content was preserved by moving under an admin account.
Originally posted by: rabbottTo view node clocks, in BRE go to "Tools > Preferences > Display Modes" and, making sure the Display mode is set to "Edit", under "Show" select "Clocks" and click OK.
Now you'll see clock in and out connectors on each node, and you can wire the dependencies from left to right, similar to how you wire node data flows together.
I'd also recommend making use of the Composite nodes. You've essentially got two separate processes: "compare notifications and acknowledgements" and "cleanup". You can group them accordingly by selecting the associated nodes and choosing "Edit > Group Selected Nodes". This will create a composite which will allow you to more easily synchronize the two separate processes. You can also define separate parameters for each process if necessary.
Attached is your graph modified according to the above.