Are you familiar with Double or is that new as well?
Spreads in double environment are not as straightforward as in simples. The main difference is that min-maxing does not work: you cannot expect to max Attack and Speed and "I'll switch out if I cannot get the KO". You cannot max HP and Defense and "I'll switch out against a special attacker" either.
Since you won't just always max the speed, speed tiers are especially important. Speed control being a big part of VGC, you cannot only consider the raw stat either: does your team play Tailwind? Icy wind? Those two directly impact the speed you want to invest in.
Then you can balance between offense and defenses, that's where people can be creative. You can optimize for a lot of situations:
- do you want to mitigate a specific weakness?
- do you want to optimize against the meta picks?
- do you want to compromise, look for the best jump point and put the rest in defenses?
There's no good answer as it is very team and meta dependant. But I hope you are not disappointed by that answer, and I hope those guidelines will help you.
You can also always start with someone else's (or average) spreads and adapt them as you play.
is better on Semi-Trick Room teams that aim for a slower playstyle imo. Look at Day 2 Toronto teams on Victoryroad to get a better idea of how people are utilising the pokemon. Trick room setters like 
and 
stand out, ideally put them and 
