change permission

I am not sure if this space is correct to ask my question. I am an administrator of office 365 in an organization , and want to collect Teams presence information of our staff's. I can obtain my own presence info in JSON format using graph explorer (https://developer.microsoft.com/en-us/graph/graph-explorer), though I cannot get my staff's presense infomation. Graph explorer shows Status code 403.

Question - How can I get another person's presence information?

GE shows following error.
{
"error": {
"code": "Forbidden",
"message": "Insufficient user permissions, cannot access this API.",
"innerError": {
"request-id": "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx,
"date": "2020-03-03T08:58:13"
}
}
}