If the plugin is not automatically showing up for you under ''Filter'' in Photoshop, you can close Photoshop and open DeNoise AI >> Go to ''Help'' >> Click ''Re-Install Photoshop Plugins''. You may be asked by Mac to confirm the operation >> Open Photoshop and check if you can find your plugin under ''Filter''.
If it's still not showing up for you, please review the following steps to make sure the plugin file of DeNoise AI is correctly set up in the plugins folder of Photoshop:
1) Make sure you have Photoshop closed and go to Applications >> Topaz Labs LLC >> Topaz DeNoise AI >> Right-click Topaz DeNoise AI app icon and select ''Show Package Content'' >> Contents >> Resources >> PS_Plugins >> Copy the plugin file ''TopazDeNoiseAI.plugin''.
2) Paste the plugin file ''TopazDeNoiseAI.plugin'' in either of the following paths depending on your Photoshop install location:
/Applications/Adobe Photoshop 2021/Plug-ins (Version specific location)
/Applications/Adobe Photoshop 2020/Plug-ins (Version specific location)
/Library/Application Support/Adobe/Plug-Ins/CC (Shared Creative Cloud Location - any version)
Note: You can go to a path by opening a new Finder window and open the Go to Panel by holding down CMD (Command) + Shift + G
3) Close all the programs, open Photoshop, and check if your plugin is set up now under ''Filter''.