And if your manager does not know (or is not helpful), ask who your HR partner is and see if they are a good/helpful one. (some are, many are not).
And if your manager, nor HR partners can be helpful, then call the Benefits line (US 1 800.556.6044) and ask about family leave options.
@1uio+1uOtVkdi is correct that Medical Accommodation is limited to YOUR own medical situation, not other people.
Depending how long, either FMLA or LOA. You can also use your sick/personal days since we're fairly close to yearend and those don't carry over anymore.
Hopefully you are in Good Standing and have one of the rare supportive managers.