Installation:

Edit > Preferences > Add-ons > Install > Find Zip File > Install Add-on > Activate it!

Example video with instructions by Jayanam:

https://www.youtube.com/watch?v=14G_YIVdBd0&ab_channel=Jayanam

How Do I Find the Addon?:

Find it under the 'N' tab (On the right-hand side) > Physics

Steps:

1. Select any object
2. Add a quick simulation setup or make your own
3. Make sure the domain is selected for smoke or fluid sims
4. Find the Physics Gen panel in the object properties
5. Use Physics Gen as much as you like!

How Do I Use the Addon?:

Follow my YouTube channel for more tutorials!

Physics Gen Tutorial Playlist

Problems or Suggestions:

Contact me on Blender Market (on the right of the page) to let me know of any errors you encounter or suggestions you may have.

Releases:

• v1.4.1 - August 2, 2021 - New particle rendering panel, bug fixes
• v1.3.4 - July 14, 2021 - More error handling
• v1.3.3 - February 12, 2021 - Error and UI fixes
  
• v1.3.2 - January 9, 2021 - more settings in the fluid domain panel
  
• v1.3.1 - January 4, 2021 -  Bug fixes, additional tips to avoid common problems, and labels for better user experience
  
• v1.3.0 - January 1, 2021 - Several bug fixes and new features
• v1.2.3 - September 8, 2020 - Fixed compatibility issues with Blender 2.9.X
• v1.2.2 - August 10, 2020 - Many small fixes and some extra settings features added, force fields are now named, smoke dissolve, and collision with domain toggle
• v1.2 - Jul 23, 2020 - Massive UI overhaul, quick setups, a separate button for randomizing force fields, extra settings, bug fixes
• v1.1 - Jul 14, 2020 - Force field randomization button, bake all and free all fluid sim from the panel, reset frame to 1, extra fixes
• v1.0 - July 10, 2020