Order of business and Order of events

Order of business noun - A list of matters to be taken up (as at a meeting).

Order of events and order of business are semantically related In some cases you can use "Order of events" instead a noun phrase "Order of business".

Order of business and order of events are semantically related in program topic. You can use "Order of business" instead a noun phrase "Order of events", if it concerns topics such as agenda.