How to set a dual-boot installation with two hard drives (SSD and HDD)

I'm about to format my PC with Windows 10 and I would like to install a system with Windows 10 and Ubuntu dual-boot. I have already done that in other occasions, but this time is different. I don't know how to set my Linux partitions correctly so what I usually do is using the automatic tool in the Ubuntu installation process. It has worked for me over the past years whenever I tried to install Linux. This time, my PC has a SSD (120 GB) and a HDD (1 TB), currently with Windows 10. I use the former to boot the system and store the most frequently used software, and the latter to store music, photos, videos, games, etc. My intention is to **install both OS** so that they **both boot from the SSD** and have a minimum storage in it, while using the **HDD for storage in both OS**. I will be using Ubuntu for programming, so I might not need as much space in the HDD. However, I will be using Windows for PC gaming, so I'll need more space there. I don't mind deleting all my current data, since it's already backed up online. I would even prefer to delete all, since I want to clean my current Windows installation.