To change the order of presentation of an activity or activity block in your Store, you must manually move them. Here's how:
Go under ACTIVITIES > EDIT
Click the name of the desired activity, category, or subcategory.
Hold down the left mouse button to grab the activity or the block of activities.
Holding down the mouse button, move the item to the desired location.
Once done, release the mouse button.
Changes will be automatically saved.