Internal Job posting- Work from home situation

My Attorney mentioned that my PWD was approved last week . Since all the employees are working from home, HR says that they are unable to post the internal job posting notice in the work location. Can you please suggest an alternative to this? This is internal job posting for 10days and cooling period of 30days. My recruitment period expires on July 28th. They need to post the notice before June 12th.

My H1B expires in December so it is crucial for me to get PERM and I-40 before then. Help or any suggestion is greatly appreciated.