The logo image (shown in the top left corner of Seeq) can be overwritten with a custom image.
This should only be considered as a last resort since it will need to be done each time Seeq is upgraded.
Create a PNG image with dimensions of 160px x 56px and name it Seeq_logo_white@2x.png. Overwrite the following file on the Seeq server with the new image: C:\Program Files\Seeq Server\webserver\image\dist\img\Seeq_logo_white@2x.png. To see the new image users must clear their browser cache by holding down the Shift key and reloading the Seeq page.