Wanting to issue a single survey to multiple units/people within organizations?

The goal would be one survey per organization with multiple people within the organization being able to complete various sections of the survey. It is unclear who the various department representatives would be so I am thinking that I will use the authenticator to gain access to the survey, have a table of contents as the first question so that respondents can pick the section (block) that they will answer and then the survey will display those blocks. So, when the next person logs into the survey, the first person's sections will be completed and this person can select the various sections for which they will respond and so on. The submit button would be reserved for the last person when the survey was finished. An alternative would be to have each person name the next person by email and then email the re-take link to them, although this would make for a little less convenient survey for the respondents. Any ideas or guidance about how to accomplish this?