How do I enter an asset purchased on a Hire Purchase Agreement (includes part exchange) within Intro?

The simplest method to enter your new asset on HP with a part exchange is by entering a bank payment. The Bank payment should be posted as below with the first item line going to your assets nominal which will be classed as a Current Assets group type (even if you manually create a group called Fixed Assets).

The second item line will also go to the same nominal but will be as a negative value as this is the value of the asset you have sold. If there is no part exchange, you can ignore this line. 

The third line should be posted against a new nominal for the amount financed, this will be within the Liabilities group and again will be entered as a negative value. 

Finally, if relevant any charges included on your initial payment should be posted against your HP charges nominal.