Learn French: En ce qui concerne le cahier des charges, qui va le rédiger ? - Regarding the specifications, who is going to draft them?

Yes, you could say Quant au cahier des charges, ... Both expressions introduce a topic. En ce qui concerne literally translates to "in that which concerns" (regarding), while quant à means "as for". Just remember that quant à requires the preposition à, which merges with le to become au.

Literally, cahier des charges sounds like "notebook of charges". How does this translate to "specifications"?

It is the standard French business term for a "statement of work" or "requirements document". In professional contexts, cahier refers to a record or document, and charges refers to the obligations, constraints, and requirements a project must fulfill.

The English translation says "draft them", so why does the French sentence use the singular pronoun le (le rédiger)?

Pronouns in French agree with the grammatical gender and number of the noun they replace, regardless of how it translates into English. Here, le replaces le cahier des charges. Since the core noun (le cahier) is masculine singular, the pronoun must be the singular le.

Why does the pronoun le go between va and rédiger rather than before the whole verb block?