The concerns of jatis, or social groupings, in old Indian culture were governed by a system known as the caste system. The caste system was a complicated social framework that regulated many elements of life, including as marriage, profession, and social standing.

The caste system was based on four primary socioeconomic categories: Brahmins (priests and academics), Kshatriyas (warriors and rulers), Vaishyas (merchants and farmers), and Shudras (laborers and slaves). Each varna had its own set of rights, obligations, and advantages.
Within the varnas, there were numerous jatis or subgroups that were based on occupation, kinship, and regional factors. The jatis formed the building blocks of society and were characterized by specific social roles and occupations. Each jati had its own rules and regulations governing marriage, occupation, and social interaction.
Marriage within one's own jati was strongly preferred and often enforced to maintain social purity and prevent the mixing of different castes. Rules regarding marriage were strict, and individuals were expected to marry within their jati, adhering to rules of endogamy. Inter-caste marriages were generally frowned upon and could lead to social ostracism.
Occupational divisions were also an essential aspect of jati regulation. Each jati was associated with a particular occupation or set of occupations, and individuals were expected to follow the occupation of their jati. This occupational division ensured that each jati performed its designated role in society and maintained social and economic balance.
Jatis also had their own internal mechanisms for resolving disputes, maintaining order, and regulating social behavior. Local councils or bodies, known as panchayats, played a crucial role in administering justice and settling disputes within the jatis. These panchayats, composed of respected individuals from the community, would make decisions based on custom, tradition, and prevailing social norms.
Overall, the affairs of jatis were regulated through a combination of social norms, customs, and traditional practices, all of which were deeply ingrained in the fabric of Indian society. However, it is important to note that the caste system has undergone significant changes and reforms over the years, and modern India has taken steps towards addressing caste-based discrimination and promoting social equality.