The order entry UI is an OpenMRS feature that allows medical personnel to add orders through the user interface(UI). This document would guide you on how to use the application to lab Orders. Order Entry UI also supports creating Drug Orders for patients, this is a link to the guide on how to create Drug Order.
To be able to work with Order entry lab orders, lab orderable needs to be configured first.
To configure lab orderables, use this guide link.
The lab order entry UI form should look like this when the page loads: