The notion of stereotype was introduced in Unified Modelling Language as a mean enabling extension and customisation of the language. But stereotypes can also be included into an UML based software development process to improve its quality. The paper recalls a description of what is a stereotype in UML and how it is defined, what role it is intended play and how it can be specified i.e. introduced into use. Based on this a classification of the uses of the notion is presented followed by practical suggestions how concrete stereotypes can be introduced into development process ? starting from informal description, through formal specification and ending with customisation of a tool for the usage of the stereotype. An integration of the solution with the existing, complementary profile dedicated for the tool used is also presented.