1That way/direction — indicating a direction that is away from the speaker but close to the listener.
道に迷ったら、そちらの道をまっすぐ行ってください。
If you get lost, go straight along that road over there.
駅はそちらの方角ですよ。
The station is in that direction.
荷物はそちらへ置いて構いませんか？
Is it okay if I put the luggage over there (near you)?
2There — referring to a place away from the speaker but near the listener.
そちらは天気がいいですか？こちらは雨です。
How's the weather there? It's raining here.
そちらの会場には何時に着きますか？
What time will you arrive at the venue over there?
郵便物はそちらに届いていますか？
Has the mail arrived there?
3That (one) — referring to something close to the listener (similar to "that" or "that one").
その本、そちらの方が詳しいですか？
That book — is that one (of yours) more detailed?
メニューの中で、そちらをお願いします。
I'll have that one from the menu, please.
そちらの作品は見せてもらえますか？
Could you show me that piece of your work?
4You / your (polite) — a polite way to refer to the listener, their family, or their organization.
そちらは何名でいらっしゃいますか？
How many people are there in your party?
そちらのご意見をお聞かせください。
Please let us hear your opinion.
そちらの状況はいかがですか？
How are things on your end?
5That person — referring to someone who is near the listener.
そちらはどなたですか？
Who is that person (by you)?
そちらの方に少しお待ちくださいと伝えてください。
Please tell the person over there to wait a moment.
そちらの担当者におつなぎします。
I'll connect you with the person in charge over there.