Sadly, the Nespresso Inissia cannot make lattes or cappuccinos because it does not have a built-in milk frother and drinks like lattes and cappuccinos require milk foam in order to be close to the original.
To remedy that, or if you want to widen the repertoire of what your Nespresso Inissia espresso machine can do, invest in a separate milk frother.
They are heavily available online and in your local kitchenware stores or specialty shops specializing in coffees.