The Update Install Status function allows you to update the install status fields for multiple Products at one time:
Install Status fields update automatically from Tasks but if you are not using Tasks this is how you can update these fields with data from your third-party Task system.
Select the Products you wish to update and then click Update->More->Install Status from the Tools tab in the Project Editor. This will open up the following form:
Here you can select the fields you wish to update and enter values. Click the Update]button when done. This will populate the selected fields for the selected items:
You can also view/edit these fields on individual items from the Edit Product form: