To rearrange tables in a Dine-In Area:

Step 1: Visit Setup > Location Setup.
Step 2: Select the location at which you want to update the Dine-In Area.
Step 3: Click on Dining Sections and select the Dine-In Area.
Step 4: Hover your mouse over the left, along the tables listed out, and click and drag tables to rearrange them in the order of your preference.
Step 5: Once done, click Save All.