In the Employer listing area, there are two fields for company size and company revenue. How do I delete them and replace them with company location and company type? If not, how do I simply stop them from appearing?
In the admin site, under "Static Attributes" you'll find the values for both Size and Revenue - edit and delete as desired.
To rename the field, you'll need to create a language field override using Joomla! language manager. Do a search for those values "Company Revenue" and "Company Size" - make sure you do this for all the found values.