Collaborator needs full access to transactions

I have an assistant/bookkeeper that needs the ability to enter and modify all transactions as if he were the owner of the account. Currently, since he only shares information attached to portfolios or properties, for credit card transactions, I have to assign the charges to a fictitious property and then he has to make a note as to which property the charge is related to and then I have to go back in and assign the property. This is three touches for one transaction and a waste of time.

There needs to be an option for a collaborator, or partner, to have full read/write access to all transactions.