This video will show you how to setup Git Bash in your windows terminal in under a minute. The values used in the video are all here for you in the description. So once you know where they go you are free to use this as a reference.
Name: Git Bash
Command Line: "C:\Program Files\Git\bin\bash.exe" --login -i
Icon: "C:\Program Files\Git\bin\bash.exe" --login -i