Nothing in this chapter shall prevent the Building Manager, FMD, from the following:
Public areas made available may be used during or after the regular working hours of District agencies, provided use will not interfere with the conduct of government business.
When public areas are used by permittees after normal working hours, all adjacent areas not approved for after hour usage shall be locked, identified by signs, or physically barricaded, as appropriate, to restrict the participants' movement to only that space or area(s) approved for usage.
D.C. Mun. Regs. tit. 1, r. 1-1404