When you transfer a design from the schematic editor to the pcb editor the components from each sheet are clustered in a pcb placement room if room creation is enabled in the project options.
Altium room definition schematic.
If the project is a multi channel design and the source and destination channels are members of the same channel class then format copying will be applied to the.
New altium users may not fully understand the benefits of organizing schematic sheets into a hierarchical top down or bottom up perspective.
It is a region that assists in the placement of components.
The altium community hosts several online videos showing schematic features here.
A room is a primitive design object.
The altium online documentation system has a step by step tutorial of a simple design from beginning to end.
A room is a primitive design object.
It is a region that assists in the placement of components.
As a result users often proceed with simple flat schematic designs without giving a second thought to project organization.
The big advantage of using rooms in a multi channel design is that the pcb editor supports duplicating the placement and routing from one room channel.
Destination room this field contains the name of the destination room representing the channel from the schematic that the copied placement and routing will be applied to.
Room locked allows you to lock the room in its current position within the design preventing accidental movement either manually or by the autoplacers.
Rectangular or polygon type rooms can be placed on either the top or bottom layer of the board and can either be placed empty associating components at a later stage or placed around components in the design automatically associating them to the room.
If you attempt to move the room when it has been locked a warning dialog will appear asking whether you wish to go ahead with the move.
Default constraints for the room definition rule.
However design is much more than just having easy access to design.
Rectangular or polygon type rooms can be placed on either the top or bottom layer of the board and can either be placed empty associating components at a later stage or placed around components in the design automatically associating them to the room.