The order of the items under Related apps & spaces in a space cannot be changed.
If you add apps and spaces in Related apps & spaces, they will be listed in the following order.

• In descending order of the created datetime of the apps
• In descending order of the updated datetime of the spaces

If you want to gather related apps or spaces in the body text or thread of a space, you can use either of the following methods.

• Add links to apps in the order of your choice.
• Attach the related apps of your choice.