Sec 334 was fulfilled in the Rose garden/outdoor speech by PDJT when he told people to go home.
Also, a look back to 2017 inauguration
https://freerepublic.com/focus/f-chat/3924875/posts
Yeah but they did disperse. The IA can be invoked for just one or two sections. The dispersal thing is not actually relevant at this point. Sections 332 and 333 are most relevant and important, looks like to me.