In order to determine and meet the needs and aspirations of the sample satisfaction, we must know the value of samples of each role. If not, we will lose the sample. And each associated with a role. There are 3 samples of the role that the user (users), the payer (the payer) and the buyer (the buyer). All must know that, as a user (user) client is a very important role in the majority of a product or service design. And function of products or services have a major demand by the user, and can reconcile the needs and good wishes.

The other two roles are not so important. As a payer / Household (individuals who received money sejumalah product or service), if the price or functionality as a user does not comply with the sample (users) and buyers (buyer) the role of the other can not buy the product unfit for human consumption. The role of taxpayers is often neglected in marketing, but if the role of the taxpayer are not met, the acquisition will not occur. In order to understand the role of the taxpayer can take a sample by asking the desire to go by car kekampus problematic students. Most students like to take the car kekampus. However, the students can not buy a car, the car discouraged. Because up to now the car prices are still a distant students.

Another important role of the buyer / buyers. The role of purchased job-seekers, and how it is, if there are buyers in obtaining products or services, so that buyers will not buy products or services, so that the user’s role will not be difficult to achieve. Examples of the child’s age to be a bike, he saw through television ads, but far from the home of the bicycle shop a lot, his mother did not have time to go. Therefore, the user’s role in children can not be met. Occupied the buyer’s role is very difficult and sometimes frustrating.