The drawers of the furniture are pre-set by the factory. In the normal case no further adjustment is necessary. The adjustment of drawers or hinges (in the case of initial installation or even after prolonged use) is not a service case for a factory bath, but is usually carried out by the installer.
Longer service life, different load may require a little readjustment after some time. This setting can be done also by yourself. As a guide, we recommend the user manual or as described here: