Setting up for streaming. Questions about activities, widgets and other options

Getting everything setup to start streaming
Currently I have web page widgets in place with what I need.

  1. Do they unload when I switch activity or do they hold onto whatever resources until I delete those widgets?
  2. Are there other options for opening handful of programs (OBS, chat, stream preview, dashboard controls, timer, and a wiki) and putting them on specific monitors/areas automatically?