Preparing the image
You will need a square image, at least 200x200 pixels. The format can be GIF, JPG or PNG.
Click into the gear symbol on the top left and choose "Organisation settings" in the dropdown-menue.
Uploading the logo
In the area "Logo", choose the picture, you want to add to your organisation. By clicking "Update Profile" your changes will be loaded onto the server and instantly changed. Your new Organisation Logo will be visible on all devices.
Now you can drink a coffee on the successful logo upload!