Signals Notebook: How to free up a grid space occupied by container in Signals Notebook

Deleting the container from the system would free up the occupied space it previously held within the grid. (Please refer the screenshot for reference)

1. Go to container for which the grid space needs to be freed as it is no longer present (e.g. Container- 0038 currently in E5 position)
2. On the top right corner click on three dots and give delete 
3. In the pop-up window select "Delete"

On refreshing the location page, you can see the container location is no longer occupied and is free now.