How do I build on top of an IP generated example design?

Hi,

Example designs are generated with two set of files, one for hardware implementation and second for simulation purpose. you should be able to find the readme file with commands to guide you on next steps.

Yes, example designs are generated with simulation scripts you will be able to bring up the simulating using the script for Modelsim it will be "msim_setup.tcl" You can take it as a baseline and build up your design on top of it by adding other components.

You should refer to example design user guide to answer the questions related to file structure and file details.

https://www.intel.com/content/altera-www/global/en_us/index/documentation/pvu1502901260167.html

Let me know if this is helpful to address your question.

Thanks,

Arslan