Select My Network and then select your Community.
Select the Community Manager icon (three horizontal lines) and then select Administration.
Select Settings and then select Appearance.
Select Change Logo to upload your Community's logo.
Select Change Banner to upload your Community's banner.
Select Browse to find an image on your computer.
Next, select the image and then crop it in the right panel by clicking and dragging your pointer across the image.
Select Save when you are finished.