Navigate to the QuikSeps folder on your desktop and select the .atn file. : Go to Edit > Color Settings in Photoshop. Click the Load button and navigate to your QuikSeps folder. Select the QuikSeps Custom Color.csf file and click Load .
The V.4 update (including variants like V.4.118 released in 2023) introduced several key refinements over previous iterations: New CMYK Process Sequence QuikSeps Professional - V.4 For Adobe Photoshop.zip