Once you have identified one or more personas, you must determine the type of each. The main ones are the primary and the secondary person, but there are several other types, such as negative, supplementary, served person.
The primary person is the one that needs to be catered for in every way by the product. She will not be satisfied if the design is done for anyone else. If we make the primary person happy, the others will not be sad.
The secondary is generally satisfied with the interface made to the primary, but has some additional specific needs. Make the design for the primary and then, as far as possible, accommodate the needs of the secondary.
The supplementary is neither primary nor secondary, but ...