seitime-frappe/frappe/docs/user/guides/app_development/adding-module-icons-on-desktop.md

To create a module icon for a Page, List or Module, you will have to edit the config/desktop.py file in your app.

In this file you will have to write the get_data method that will return a dict object with the module icon parameters

Example 1: Module Icon

def get_data():
	return {
		"Accounts": {
			"color": "#3498db",
			"icon": "octicon octicon-repo",
			"type": "module"
		},
	}

Example 2: List Icon

def get_data():
	return {
		"To Do": {
			"color": "#f1c40f",
			"icon": "icon-check",
			"icon": "octicon octicon-check",
			"label": _("To Do"),
			"link": "List/ToDo",
			"doctype": "ToDo",
			"type": "list"
		},
	}

Note: Module views are visible based on permissions.