We have a "Configuration Management" label in the Splunk Home Page under which we have different dashboards.
How to add the label and categorize dashboards under that label in the Splunk home page?
Attached is the image for the understanding.
I guess you are trying to add a new dashboard under Configuration Management
You can do it in two ways,
step 1 - First select your corresponding app then click Settings --> User interface --> Navigation menus --> default
step 2 - Add your new dashboard entry under Configuration Management which was already present there.