These can be applicable for many European countries, Canada, Singapore, Australia etc.
1 Citizen or permanent resident,can handle the immigration for their spouses or minor children (under 18 years old)
a. Their spouses can get temporary resident status. If their spouse under 40 years old, 2 years later can be got permanent resident status. If their spouse over 40 years old, one years later can be got permanent resident status.
b. Their minor children (under 18 years old) can be got temporary resident status.
When their children will over 18 years old, if their children want to retain the temporary resident status after 18 years old, he or she must go to work or go to school.