Install two versions of Photoshop

[CarmeloLabadie]

Can I install two versions of Photoshop on my computer at the same time, in case I want to switch between using 22.2 and 22.5?

 

[JeffK]

Yes you can have two different versions.
Discussion here:

Re: Teacher: Can I install two versions of Photoshop on one computer? We need both 2018 and 2019.

You can. There should be an option to keep both versions rather than replacing 2018.

community.adobe.com

 

[JeffK]

I may not have completely addressed your question.
Are you trying to update your current version and keep the version already installed?
Or are you trying to install an older version than what you have?