Where do I post this notice? Since most of my workforce is teleworking, where do I electronically “post” this notice?

Each covered employer must post a notice of the Families First Coronavirus Response Act (FFCRA) requirements in a conspicuous place on its premises. An employer may satisfy this requirement by emailing or direct mailing this notice to employees, or posting this notice on an employee information internal or external website.

Source:

U.S. Department of Labor FAQ

U.S. Department of Labor Poster
U.S. Department of Labor FAQ