Authenticate to Bamboo HR with an API key.
Choose the correct HRIS by following the steps [here](/integrations/how-to-connect-my-hris).
Log in and click on your name in the upper right-hand corner of any page to get to the user context menu.
Click 'Add New Key' in the upper left corner
Input a name, and then click 'Generate Key'.
Copy the API key that appears, and add it to 'Merge Link'.