There are 2 ways to see your Jira Dashboard that are organised by Dashboard Folders plugin:
Jira Top Menu bar
Dashboard Sidebar
Jira Top Menu bar
From any page in Jira, simply click on the “Dashboards” top menu bar to see the dropdown list of:
Favourites Dashboards
Dashboards and Folders placed in the Home Folder
“Manage Dashboards” link
Dashboard Sidebar
From any Dashboard page, the Dashboard Sidebar is visible if there are any Dashboard and/or Folder in it.