A mechanism is provided for automatically defining on a computer data for execution of systems management tasks on endpoints by a systems manager management said endpoints. The mechanism reads connection/disconnection information related to the endpoints collected by the systems management server during a same period of time for all the endpoints, computes the availability trends with the connection/disconnection information for said same period of time classifying endpoints according to the predefined classes of availability trends for endpoints and the computer availability trends, applies rules to create data defining execution of systems management tasks on endpoints according to the result of the classifying step, and makes these data available to the systems management server.