This feature is common to all sharemundo links® solutions.
Step 1: Go to the 'Chat' section in the left-hand menu ('Company management' section).
Step 2: Select your company name in the left-hand section.
Step 3: Type your message in the chat bar at the bottom right of your screen, then click on the send message icon or use the 'Enter' key on your keyboard.
Note: if you wish to participate in a discussion with all team members of a project, select the project name in the project chat (not your company name).