For checklist and radio button type questions:
Is branching possible with a survey? For example, if someone answers No to a particular question, then the survey ends.
Hi Gina, no branching is not possible. For more advanced surveys, we suggest checking out JotForm .
Is there anyway to save the Survey as a draft so it's not visible until it has been approved?
You can't save surveys as drafts. You could uncheck Poll Permissions > View permission for members until the survey is approved. Note that all polls and surveys in the space won't be accessible until you check the permission again.
is requesting access to a wiki that you have locked: http://my.axerosolutions.com/spaces/5/communifire-documentation/wiki/view/21595/manage-space-create-survey