Yeah, you can pick and choose. All eco+ features are independent.
Go into your eco+ settings. You'll see sliders for five features: Smart Home & Away, Schedule Assistant, Time of Use, Community Energy Savings, and Adjust temperature for humidity. Just toggle the Time of Use slider to 'off'. The others stay on.
If you don't see Time of Use: It's only applicable if your electricity rate varies by time of day. If you're not on a variable rate plan with your utility, the feature won't be available. You'd need to contact your utility provider to switch plans.
Heads up: Time of Use requires internet. If your thermostat loses connection, the feature won't work until it's back online. Also, if you disable all of eco+ for the day, Time of Use stays off until midnight.