A processor can determine that a set of the memory cells is controlled by signals from a first portal. The processor can determine a function of a second portal in a relationship between the first portal and the second portal. The processor can cause, in response to a determination that the function of the second portal is a specific function, a memory control circuitry to be configured so that a subset, of the set, is controlled also by signals from the second portal. The processor can determine a function of a third portal in a relationship between the first portal and the third portal. The processor can cause, in response to a determination that the function of the third portal is the specific function, the memory control circuitry to be configured so that the subset, of the set, is controlled also by signals from the third portal.