So first use Deserialize json activity and then change the type argument to JArray(Default is JObject)
Then as below you can access each…to access each set of jArray items you need to use counter starting from 0 …and then to access values inside them use the key for those values. Here jarr is the output of Desrialize Json
jarr(1)("Name")("S") - for the second item name jarr(0)("Date")("S") - for the first item date
And also Is ee salary is not present in first set and you might get exception if you use …so you can first check if it is present using IsNothing(jarr(0)("Salary")). This can be applied for any key you want to check for existance…this returns true if not present else returns false