In Selenium, the WebDriver Manager is a library that simplifies the management of web drivers required for automated browser testing. There are multiple ways to set up a browser driver. For the sake of simplicity, using a third party Python library named "Webdriver Manager", is a good option.
A brief example of how you can use the WebDriver Manager in Selenium is below:

from selenium import webdriver
from webdriver_manager.chrome import ChromeDriverManager from webdriver_manager.firefox import GeckoDriverManager from webdriver_manager.microsoft import EdgeChromiumDriverManager

#Set up Chrome driver using WebDriver Manager
chromeDriver = webdriver.Chrome(ChromeDriverManager().install())

#Set up Firefox driver using WebDriver Manager
firefoxDriver = webdriver.Firefox(executable_path=GeckoDriverManager().install())

#Set up Edge driver using WebDriver Manager
edgeDriver = webdriver.Edge(EdgeChromiumDriverManager().install())