Go to Settings > My Profile.
Scroll down to Change your password.
Enter your old password, then the new one, then repeat the new password.
The password needs to be at least six characters.
Click on Change password.
Done!

Forgot password
Have you forgotten your old password? Follow these steps.
Log out of GetAccept
Click on Forgot password
Enter your email address > Send reset link
Check your email and click the included link to reset your password.