What is soft starters in motor

i this link gives you maximum information
<a href="https://en.wikipedia.org/wiki/Motor_soft_starter" target="_blank" rel="nofollow noopener noreferrer">Motor Soft Starter</a> regarding motor connection we can start a motor with single starter because we use starter for safety on starting of motor
by considering your connections think as it is safe for the motors you can use that for any number of motors