Help on playing all sims2 expansions & stuff pack at the same time?

guys, anyone knows how i could play all the expansion and stuff packs at the same time? i installed it all already in order of the release but even if i open the latest installed, for example glamour stuff pack, it would just run that particular stuff pack and not all the other expansions & stuff pack. the same goes if i open the latest expansion "open for business" it just shows that expansion and not the others... but if i run each of the expansions and stuff packs individually it works...? help pls on playing them all at the same time...