Consider: an entity with 3 separate companies in the same BC tenant (e.g. Company A, Company B, and Company C). All 3 companies occupy the same rented building. Company A receives the monthly vendor invoice for rent. Company A will be paying this invoice. The rent expense of $10,000 will be distributed across all 3 companies.

I should be able to create a 4-line entry in BC's Intercompany General Journal that would look something like:

The first line would be a document type of invoice, account type vendor, credit $10,000.
The second line would debit G/L rent expense for $3,000.
The third line would debit account type "IC Partner", Account Number "Company B" for $2,000.
The fourth line would debit account type "IC Partner", Account Number "Company C" for $5,000.

This is an abbreviated description, but the point is that it should be possible to book this entry from the Intercompany General Journal screen. Currently, this isn't possible.