Photograph 34 Long-term Deprivation of Liberty 145. Given the structure and layout of the building at the «Las Palmeras» center, there are no physically separated units or groups, and the 12 bedrooms for mi­ nors are located along two parallel hallways on the first floor of the building, which is used exclusively to house these bedrooms. Despite the fact that it is im­ possible to physically separate minors in different units, they are separated ac­ cording to the educational group to which they are assigned. These educational groups include the following: the reception group, the educational development groups from one to four and the final group. The distribution of units or groups at the «Teresa de Calcuta» center and the accommodation of minors in each one correspond to the Internal Stage Classification Program followed. These stages consist of an initial stage, observation stage, development stage and final stage. Each one of them has specific guidelines or requirements to advance to the next stage or to be demoted, depending on the regime in which minors are in custody, in other words a closed, semi-open or open regime. This system of promotion and incentives allows minors with the greatest problems of self-control to have a more adapted observation area that is better suited to their real capacities and needs. At the «Zambrana» center, the fundamental criteria for the distribution and place­ ment of minors in units with other minors is age and their cognitive and perso­ nality development. The center has nine units, which are either residential or coexistence units and non-residential units. There are eight residential units, consisting of four units for boys, one unit for girls, one therapeutic unit and one admissions unit. The criteria for the 146. On being admitted to a center, all minors are given written information regarding their rights and obligations, general organization matters, operational rules, disciplinary regulations and means for lodging requests, complaints or ap­ peals. These informative booklets are available in several languages in the two centers of the Community of Madrid, but not at the «Zambrana» center in Vall­ adolid, contrary to the content of paragraph 176 of the 2011 Annual Report. In the course of an interview of a minor in the center’s Admissions Unit, who had been admitted three days before, the minor stated that he had been properly treated at all times but it was noted that he had not been given the Information When they are admitted, THE OMBUDSMAN OF SPAIN distribution of minors vary from one center to another minors are given information on their rights and obligations, general organization matters and operating and disciplinary rules 117