By default, each Webmix is set to a standard size, but you can customize it according to the amount of space you need for your Tiles.
Open the Webmix you want to resize.
Click the Edit Webmix button (pencil icon) in the top-right corner.
In the menu that appears, look for the Rows and Columns sliders.
Drag the sliders left or right to adjust the size of your Webmix grid.
Once you’re happy with the size, close the edit menu — changes are saved automatically.
Tip: It’s best to leave a little extra space around your Tiles so you have room to add more in the future.
Keep in mind: The Webmix will not automatically shrink when you delete Tiles — you’ll need to adjust the grid if you want a smaller layout manually.