You should usually be able to log in via Exchange using your email address and password. If you have two-factor authentication enabled on your account, you'll need to generate an app password, and you can use Microsoft's instructions for how to do that, or follow these steps:
To create a new app password for an app or device, take the following steps. You can repeat these steps to create an app password for as many apps or devices as you need.
Let us know if you need help or further guidance on this!