The output path can be changed for each build as follows:
- In HelpNDoc's "Home" ribbon tab, click the top part of the "Generate Help" button to show the "Generate documentation" dialog;
- Select a build in the "Build list" on the left;
- Change the "Output file" build settings on the right;
- Click "Generate" to build the documentation.
Follow this step by step guide to learn more: How to define build settings in HelpNDoc.