you really need to start going through the material here: How do I get started with BladeLogic (BSA)? How do I learn more about BladeLogic? How do I use it to do my job? Solve… as well as the product docs (docs.bmc.com).
yes - you can create custom compliance - eg using bsa's compliance rules to check that your systems meet your organization's configuration guidelines. bsa also provides 'component templates' that contain compliance rules based on various industry standard policies like CIS, PCI, etc. additionally, bsa can ingest SCAP content and scan with that .(this uses a different engine than the component template based scans)