BigFix Web Reports; Anyway to add "Computer Group" column?

Welcome @michael.jones

That is the default Web Reports layout and cannot be modified. If you need to retrieve this information along with the associated computer groups, you will need to rely on custom REST API queries.

You can start from here: Inspector Search | BigFix Developer

One of the great example: Need Help with a Windows patch Remediation Report - Reporting - BigFix Forum