How do you create an order for radiology from within OEMR

You need a lab in order to set up a compendium/configuration.
So for an internal compendium/set of test you should set up a In House lab using something like:

To set up a Procedure Provider for in house add entry to Address book then using entry create a provider from Procedure menu.

Important to add the new internal lab to your test/procedure configuration. I’m sure there is instruction for setting this up on our wiki.