# diagrid region group update Update a region group's members ### Description Update a region group by replacing its members. A region joining the group must be empty, of the same type as the other members, and in no other group. A region may be removed while group projects are still placed in it: those placements are torn down without touching the project's data, and the group reports the region as draining until the last one is gone. ``` diagrid region group update [flags] ``` ### Examples ``` # Add a third region to the group diagrid region group update my-group --regions region-1,region-2,region-3 ``` ### Options ``` --regions string (Required) Comma-separated region IDs replacing the group's members -h, --help help for update ``` ### Options inherited from parent commands ``` --api-key string Diagrid Cloud API key ``` ### SEE ALSO - [diagrid region group](./group.md) - Manage region groups