Toshiba RAS-25G3KVSGB-ND Owner's Manual page 16

Group operation.
Maximum 3 groups
1 Group maximum = 10 units.
Add group
Add AC in group
Delete AC in group
Please make sure Factory Reset is
performed before deleting AC from
mobile application.
(See owner manual ʺPress and hold
MODE button on remote control for 5
second and active dL functionʺ)