To publish your solicitation on the Negometrix login screen (Published Solicitations tab), you must click on the desired solicitation and go to the settings. In the Settings, click on "Approval & Publication" on the left hand menu. In this screen there is a checkbox to publish the solicitation on Nx3. If you select this option, the solicitation will be listed on the published solicitations screen (the screen that is defaulted before logging in).
By publishing the solicitation, any prospective supplier can read the short description and see any attached documents. In order for them to participate and respond to the solicitation, they must click the participate button.