Anchoring content from multiple text frames on the same line / y-axis

Hi friends,

I'm in the process of redesigning our staff newsletter, but have hit a snag.

I have two text frames acting as columns within the primary body of my document. The small one on the left is a staff code. The larger one on the right is the main content block. I want to ensure that staff codes always remain on the exact same baseline / y-axis as content subheadings.

I have figured out an ad-hoc solution: ensure that both subheadings and staff codes are aligning to the baseline grid. This has worked mostly glitch-free, with some exceptions.

However, in my ideal world, I could anchor a staff code to each subheading within the main content block. This would allow me to input text anywhere in the document, while preserving flow. It would also ensure that staff codes remain on the exact same baseline / y-axis as content subheadings.

Does anyone know how I might accomplish this?

Thank you very much, in advance.