Hi there, FTLLD.
Currently, there's no option to turn off the predicted events in the Cash Flow Planner when it's already set up. Manually removing the entries one by one is the only way to do so. I can see how essential it is for your business to turn off some features that are not needed. I'll take note of this, so our engineers get more ideas on how to improve QuickBooks and give our customers the best experience possible.
For now, I suggest visiting our QuickBooks Blog to know about the latest news and updates from QuickBooks Online.
I'm also adding this article to further guide you in effectively managing your business using QBO: Help guide for QuickBooks Online. It contains topics about advanced accounting, banking, and payments to name a few.
Let me know if there's anything else you need help with. Know that I'm always here to help you anytime. Take care and keep safe!