The fixed resources defined for each of a room's room layouts may differ. Room A's conference room layout, for example, may have different fixed resources than Room A's theater room setup. However, there are some general considerations that apply to all room layouts. Fixed resources include items such as desks and chairs that cannot be moved or removed from the room. Some rooms may have additional fixed resources such as large-screen TVs that cannot be taken out of the room. In addition to desks and chairs, other common fixed resources include whiteboards, projectors, and tables. Chairs are usually fixed based on room size and configuration; small rooms may only have space for a few seats, while larger rooms can hold many more. Desks are typically fixed at one per person unless otherwise specified. One exception is the use of desk pods; these are groups of two or more stacked desks that can be joined together or separated by a wall or partition. Pods are useful in small spaces where desks around a central meeting area would be difficult to fit. Large-screen TVs are usually fixed at one per person because they take up much more space when folded down vs being flat screen. Projectors similarly take up a lot of space when not in use. Finally, tables can be used as fixed resources for any type of meeting or presentation.