Course Editing
5. Blocks
Blocks are content containers that can be added to the right side of the a Moodle course. Popular ones include Panopto and Quickmail.To add a block to your course, turn on edit mode and click the arrow on the grey tab on the upper right-hand side of the screen to open the block drawer.
Click "Add a block"
This will open a popup with a list of available blocks. Select the one you want and it will appear in the block drawer. Click the x to close the block drawer.
Click here for more Moodle Documentation about Blocks.