When you create, edit, or view a document using a custom input form, the company you are in determines which version of the form you see. For example, imagine that your org contains the following companies:
You might want to create three different custom input forms for entering sales invoice documents, so that each company has a custom input form specific to its tax calculation method. You would want to assign the SUT custom input form to Hecate USA, the VAT custom input form to Hecate UK, and the Combined custom input form to Hecate Canada. Users creating sales invoices in the different companies will then only need to complete fields that are relevant to their current company.
To assign a custom input form to companies:
The custom input form should then take effect for the appropriate document type in the companies it is assigned to. If it does not take effect, check that your system administrator has overridden the New, Edit, and View buttons on the custom object for the document type to use custom forms. See Setting Up Custom Input Forms for details.
Related Concepts
About Related Lists on Custom Input Forms
Standard Salesforce Related Lists on Custom Input Forms
Related Tasks
Managing Related Lists on Custom Input Forms
Reference
Input Form Manager - Sales Invoice Fields
Input Form Manager - Sales Credit Note Fields
Input Form Manager - Cash Entry Fields
Input Form Manager - Journal Fields