This is definitely related to personality. If you PREFER to space them out, then do that. If you PREFER to take all your pills at once, do that. Many people can get lost in the minutia, when it's really more important to just start.
For myself, I prefer to spread the supplements out through the day. I don't do this because of any peer-reviewed study; you can find a peer-reviewed study to back up nearly any opinion. I do it that way because it is what makes sense to me.
The body can only use so much of something at once, right? You can see this in your urine fairly obviously, I'd think. Thus, spreading the supplements out allows your body to be able to use more of what's being ingested at a single time, and then do that more often.
But that's just my opinion.
If you're getting started, do what's convenient so that you get in the habit of just doing something.