You can assign GL Codes in your Profit Rhino account if you are using Profit Rhino with Service Titan. This will allow you to link up your Profit Rhino content in Service Titan to your Quickbooks account.
There are two different places in Profit Rhino that you can populate this "Account" field with your GL Codes.
From an individual task:
While in a task, click Accounting and enter the code in the Account field. Click Save.
For a group of tasks:
While on any Business Type/Category screen, click Edit and put the code in the Account field. Click Save.