Here is how to add calendar power-up in trello
- First click on the "Boards" option in the left sidebar navigation
- Then click a board in the workspace section
- Next click the "More" menu button (three dots) in the top-right corner of the board
- Click on "Power-Ups" option from the dropdown menu
- Click "Board utilities" in the left side bar
- Finally click on the "Add" button under the "Calendar Power-up" to install it





