Windows 7 doesn’t have the internal “plumbing” to see SHA256 signed.JS and .VBS files are signed.
Here’s an example of what you might see when just looking at a signed .JS file inside Windows 7.

Because of this, PolicyPak Least Privilege Manager cannot use a SIGNATURE rule type when using .JS and .VBS files along with Windows 7.

Two other notes:

1. This should work fine in Windows 10 though.
2. SHA1 signed .JS and .VBS files should work in Windows 7.