Option to associate an entire venue with a SIG?

Many of the SIG pages are out of date in their volume listings. This includes SIGs that run an annual workshop or workshops: ANN (LAW), DAT (EMNLP), LEX (*SEM, SemEval, MWE), NLL (CoNLL), TYP (SIGTYP). The workshop *venue* pages are up to date, just not the SIG pages.

Could we simply mark a venue as fully within the purview of a SIG? Then the list of volumes for the SIG could be inferred automatically (or even replaced with a link to the venue page).

We shouldn't remove the option to associate individual volumes, as SIG/venue relationships can change over time (e.g. I believe SIGSEM cosponsored some but not all instances of *SEM).