In most instances there will be no need to enter manual GL Journals. Unlike most system, Compiere automatically generates and posts the accounting consequences or Journals for every document processed. Therefore, there is no need to enter journals to record inventory moves or product sales. Some instances that will require manual journals include Fixed Asset Depreciation, Year End, Budgets, Payroll, etc. In these situations you will enter your Journals using the GL Journal Window or using Journal Import.
Budgets are created by using alternate Charts of accounts that hold the information you need. Monthly budgets, weekly budgets or quarterly budgets; they can all be entered and reported on through the dashboard or by sending them automatically to Managers of divisions that are responsible for these budgets. Reports can be YTD, MTD or any combination that fits the requirements.