Current editing date granularity, possible to set to hourly?

Hello! New to using OmniPlan so I might possibly be asking for something that doesn’t gel with how OmniPlan is supposed to be used. But…

I have a few tasks that will take a half day’s effort, I can’t seem to mark these as complete until tomorrow though because if I try to level the project, tasks from later fill up the time I’m setting as completed on another task. I have levelling set up to not schedule anything before ‘now’, but it seems like ‘now’ is just the date, ignoring the time. So everything ends up at 9am if I set things as complete. Setting the current editing date under Project only lets me set, the date, no time option.

Sorry if that’s a bit of word salad, it’s kind of a weird issue to articulate.