Step 1: Log in at https://am.happyhq.co/ using your username and password
Step 2: Select Account Trees in the side panel
Step 3: Select Add New Account Tree from the top right corner
Step 4: Name your Account Tree to help identify the correct tree when adding to a property, should you have more than one.
Step 5: Select bulk upload to upload your full Account Tree
OR create individual GL codes using '+ New Acccount'