How do I smart cast and show indicators when needed?

There are players out there, like LL Stylish, that plays Zed with 100% smartcast. Not smart cast with indicators, just smartcast. But in certain moments, when he needs his Q indicators he gets them, what setting is this? this mostly happends when stylish ultis someone as Zed and has his W shadow out as well, then he does something so he sees the indicator on his Q , when he wants to hit all 3 Qs. Can anyone pls tell me what type of setting this is? Im 99% sure its not smart cast with indicator. Ive seen many other pro players do this as well on their streams.
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