Step 1: After you log in, click on Calendars (brown box below).

The Your Calendars page will open.

Step 2: Choose the card view calendar you wish to modify. In this case, you will choose a cards (grid) view option (brown box below).

Step 3: Click on Design (brown box below).

Step 4: Scroll down and click on Frame and cells (brown box below).

Step 5: Scroll down until you find the design element Cards per row.

Notice that when you hover near the number box, up and down arrows appear (brown box below). Use them to change the number of cards which should show in each row. At the moment, 3 cards appear in each row.

As you can see in the image below, we have changed the number of cards per row to 5 (brown box below).

Click Save at the bottom to save your changes.