You can activate manual keystone correction on Cosmos Laser with these steps:

1. Press the Projector Settings button on top of the projector or press the Source button on the remote, then go to Image Correction > Manual Keystone Correction.

2. Access the settings via Nebula Connect and choose Manual Keystone Correction.

Note: 

When you power on the projector or move it to another location, the projector automatically focuses and performs keystone correction. You can turn on Auto Keystone Correction by pressing the Projector Settings button on top of your projector, then going to Image Correction > Auto Keystone Correction at Startup / Auto Keystone Correction After Movement.

If you still have any questions or concerns regarding the keystone correction feature, please contact us for further assistance.