UrAnus. #giggles
Actually till now I dunno when to guard lane or to roam, especially when I playing natalia. I read most of the times natalia steal turrets one. But I think I will die alot if I steal turrets in vs humans like how i do in vs ai.
If you ask me how I feel lah~
You have to at least take down 2 turrets then you are free to roam around to help.
As long as your turret distance between enemies is close, when you are away your enemies will have chance to sneak in and steal your turret.
So yeah, even when you take down 1 turret, the chance of your turret in that lane kena taken down is still high. When you realize it, already 2 turrets kena stolen already.
But actually, if you are SIBEH ZAI, after you take down 2 turrets, you can actually stick to your lane and make use of the time to jungle and constantly clear minions and try reach the final enemy turret.
This is a very good distraction cos nobody would want their inhibitor turrets taken down. Then they will start to rush towards your side, giving your teammates chance to steal turrets (or sadly, nonsense more chance to jungle)
But at this point of time if you use this tactic, if you can realize, your lanes' minion kills are solely yours and jungle monster money/experience is yours. By that time you are strong enough to kill a couple of incoming defending enemies.
If you choose to roam around help after taking down 2 turrets, just make sure to see which is priority - kill enemies whom you know your teammates do without your help, or help your minions so that they can grow in number and attack turrets without your help, so that you can clear, run to the next lane which needs you.
So far these roles, to be honest, if it is me I'd just assign to Pharsa, Angela, Fanny, Lesley or Natalia. Cos they very stealthy and can move from 1 corner of the map to the next. The rest should just stick to their lanes to distract enemies.
I normally stick to my own lanes unless I have idiotic teammates who are all over the place, so no choice go steal turret in empty lane.