The invention in particular has as an object the incremental configuration of an IMA-type module, the module comprising temporal and hardware resources as well as an operating system allowing a segregated running of at least two applications with the aid of at least one part of the resources. After having obtained (305) at least one first configuration parameter of at least one part of the resources, this parameter applying to a resource specific to the operating system or a resource common to the operating system and to at least one of the applications or to the applications, the module is configured (310) according to this parameter. A second configuration parameter of at least one part of the resources then is obtained (320), this second parameter applying to a resource specific to one of the applications. The module then is configured (330) according to the said at least one second parameter.