The element <reqPersons> contains the information on the required personnel for the task.A program can choose to identify the number of a certain skill (category, skill level, trade) that is required. A program choosing this method must use the element <personnel> in conjunction with the attribute numRequired.If there are requirements for a specific man, then the element <person> must be used. This element has the attribute man, which must be used to indicate the particular person (eg, man="B"). This method identifies each person required to do the procedure together with the appropriate information as defined by the project: category, skill level, trade/trade code and estimated time spent per person.If none of the elements in the element <reqPersons> is used this will be regarded as "As required".Required persons can be represented by a mix of populated the element <personnel> and the element <person>.