When you create shared transfers you can differentiate prices for different categories of tourists, for example set discounted price for children or seniors. In order to do that first of all you need to configure these categories. The Adult tourist category is created in the system by default.
New tourist category
To create a new tourist category,
On the Products menu click Transfers.
On the Information tab, Travelers categories sub-tab, click Create. Create tourist window appears:
3. In the New tourist window, specify the following information:
Name: type the name of the category.
Category: select the category type - whether it refers to adults or children.
Default: generally the Adult tourist category is created automatically and set as default. However you can change the default category selecting the Default check box.
Age: specify the age range acceptable for the category. 
Please pay attention that in case you create several tourist categories (e.g. infant, child), the age ranges should not overlap. Thus, in case age range for Infant is 0 to 2, the age range for Child should start with 3 years old.
Description: describe the tourist category.
4. Click Save. The new tourist category is added to the list of available categories.