Regarding immigration to Japan

Regarding immigration to Japan
According to the Immigration Law, a business  visa is defined as follows.
A business  visa is a status of residence for conducting trade and other business management in Japan, or for engaging in activities to engage in management of the business.
The acquisition period. 
3 months, 4 months, 1 year, 3 years, and 5 years.
The scope of activities that are possible with a business  visa are as follows.
• Activities to start a new business or engage in management of that business
• Activities to participate in a business already in Japan and engage in management and management
• Activities to manage and manage on behalf of those who are already managing