Moodle Help & Support
This refers to Moodle 3.10 from August 2021 onwards
How to: Add a Block
To be able to add a block, to customize the right and left-hand column of your module, you will need editing access to the module. There are various types of blocks that can be added, for a description of what each does see the List of Moodle Blocks help page.
- Navigate to the module you want to add the block to
- Click on the 'Turn editing on' button in the top right-hand corner

- Click the 'Navigation' ('Hamburger') menu
and scroll down to - and then click - Add A Block.

4. From the drop-down list, click on the block you wish to add. (See List of Moodle Blocks) The page will then refresh and show your new block at the bottom of the right-hand column

5. Remember to 'Turn editing off' when you have finished this 
To learn more about moving blocks see the How to move or customise the location of blocks help page.
To learn more about amending the settings of a block to e.g. show on every page not just the main page see the Block settings explained help page.