How to Wireshark capture the traffic.

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Hi, I want to know how to use Wireshark to capture the traffic. Actually, I am new to it, and I am a little bit confused about the traffic capture behaviour of Wireshark. Let's suppose I have a mobile hotspot, and there are 2–5 mobile devices connected to the same hotspot. So in this scenario, Wireshark captures all the traffic of 2 or 5 devices, like if 2 devices are watching something or downloading something like this information, or if Wireshark captures only the traffic of resource access to my mobile devices. or vice-versa.