Hello BSarmady, let me help you. I found some information in the community discussions that may help you.
World Partition
Import Geotiff as Landscape
“Resize the landscape to the size I like”
you can change the section size and sections per component as well, as shown in the attached images.
If you select “Add” in the landscape/Manage tab you can also manually add components on to your landscape. Or select delete to delete ones you do not want.
If you’re still facing challenges or have new questions, feel free to share.