Yes, you can create other Billable Expense Income account. Before doing that, you'll need to add extra characters in the Name field when adding the account.
Please take note that Billable Expense Income is already a default account in the program, and your transactions will still post from there.
Here's how to add the account:
1. Click the Gear icon. Then Chart of Accounts.
2. Select the New button at the top right.
3. Click on the Account Type drop-down to select the account type.
4. Choose the Detail Type to specify the type of account that you want to add.
5. Enter the name of the account in the Name field. From there, add extra characters.