This menu is almost identical to the View Guild Member menu... Here's a screen shot anyhow!
From this menu you can select a guild member, and choose to spend a day chatting with them. This will often increase their morale, though others in the guild may become jealous. Otherwise, this is treated like taking the night off from raiding. Item & Morale information are also available on this screen, in the same fashion as the View Guild Member menu.
The up and down arrow keys can be used to traverse the list of players, or the number keys can be used to jump to a specific player. The Enter key can also be used to confirm the selected player you wish to chat with.