Since you are on the 4.5 branch, you have access to the interface overhaul that caused a stir in the Silhouette community. In versions prior to 4.5, the "Layers" panel handled both layers and cut settings. In 4.5 (including build 807), these were split:
Note on Build 807: This was a stable release within the 4.5 cycle. It fixed several bugs found in earlier 4.5 releases regarding the "Smart Trace" feature and DXF import stability. Silhouette Studio Business Edition 4.5.807
Silhouette Studio Business Edition (BE) 4.5.807 is a feature-rich version of Silhouette’s free design software, tailored for professional users, small business owners, and high-volume crafters. This specific build (4.5.807) sits within the 4.5 release family and offers enhanced capabilities beyond the Designer and Designer Plus editions. Since you are on the 4
Silhouette Studio Business Edition 4.5.807 – Advanced Design & Production Software for Professional Crafters Note on Build 807: This was a stable release within the 4
Windows:
Mac: