TfL have published a new “frequently asked questions” page for the Streetspace for London programme here: https://consultations.tfl.gov.uk/general/a2d0760e/

It contains lots of useful information about the Streetspace programme and why it’s necessary right now. But, the programme can always be improved, so if you have comments please do feed them in to TfL by email to streetspacelondon@tfl.gov.uk