Families in GRT
Define the number of levels in the family code.
A family is identified by an 8-position family code. These eight positions allow for a levelled structure (1 up to 8 layers), that you define in the Structure Levels (tigrt0199m000) session.
Example
The family code is divided to five levels. For each level, a number of positions has been reserved. By following the === line, you obtain the family code: AB2xr95.
Define family groups and family structure.
After you define the structure levels, you have to set up the family structure that consists of family groups. For each family group one or more families are selected. For example, the family group vehicles can consist of the families cars and buses. If a selection involves subselections, the family group one lower is also entered. Use the Family Groups (tigrt0198m000) session and the Family Structure (tigrt0193m000) session to complete the family structure.
Define families
Once the family structure has been set up, you must define families with codes. Only the end of the family structure can be defined as families, and receive a family code. Use the Families (tigrt0103m000) session to define the families (refer to Composing a family code - an example).