Drag-and-drop the file or picture from your computer into the message window or text input area.Send a file or a picture by doing one of the following:.Type your message in the text field at bottom of the window.Pause on their picture in the Contacts list and click the IM button on the Quick Skype for Business menu.Right-click their listing and click Send an IM.Double-click anywhere on their contact listing.To start an IM conversation, locate the person you want to send a message to, either through search or your Contacts list.Point to Add to Contacts List and select a group to save the Contact.When the Contacts list appears, point at the picture (or picture display area) of the person, and click More Options (…).In the search field on the Skype for Business main window type the name, email address, or phone number of the person you want to add.If you have a headset, speak into the microphone. If you have a handset or desk phone, pick up the receiver and speak into it. The blue indicator helps you choose the appropriate level. Click the green arrow next to the speaker to hear a sample tone.Under Customize your device, drag the sliders to adjust the speakers and microphone.If you have more than one audio device, pick the one you prefer.Click the menu/drop-down arrow under Select the device you want to use for audio calls.Click Select Your Primary Device in the lower-left corner of Skype for Business.You can use your computer’s microphone and speakers or plug in a headset. Before using Skype for Business to make a call or join a conference, set up your audio device and check the quality.The audio connection cannot be established with only a speaker. In order to conduct a meeting via Skype for Business it is required to have both a microphone and speaker for the audio portion of the meeting.How do I set up my audio connection in Skype for Business?.How do I share my screen through Skype for Business?.How do I customize the appearance of my message?.Audio Recommendations/Skype for Business Meeting Audio Requirements.