To edit your profile, launch Semaphor and access your team view. There you should see your avatar image and username. Select your avatar image to be shown a list of options for your account. Select the blue gear in the top right corner to cause the profile field to become edit-able. You can now adjust your username, avatar image, and biography information. Select the cog again to save any changes.
Sending Direct Messages in Semaphor
Viewing Team or Channel Members