To add a column through your Android device, follow these easy steps:
Open your board and next to your board and scroll towards the right of your screen. You will then see a + icon exactly like on the screenshot below:
Click on the + icon. A new window will open with the different column choices.
Pick the column of your choice and click on "create column" at the bottom right.
Your column will then be added to your board. This article explains how to rename your column.
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