Indicates a direction or a person further away from both the speaker and listener; 'that way', 'that person'.
そちら can be used as standalone or within a sentence.
Long explanation:
The そちら grammar point is used to refer to a direction or a person who is further away from both the speaker and listener. It can be translated as 'that way', 'that person', or 'that side'. Suggests moderate distance or closeness, compared to 'あちら' (achira) which is used when the subject is further away.