# Administration
In all Cytomine instances, there are specific users with extended permissions that are able to manage their Cytomine instance.
# Prerequisite
You must have an ADMIN account (see the Users role section for details about users roles) and have activated your administrator section using the Open admin session option in the account drop-down menu in the top right corner.
# How to go to the admin panel
First, we need to activate the "admin mode" by clicking on the button Open Admin Session.
You have now a red "Admin" label next to your username and an "Admin" button is now available at the top navigation bar.
# Dashboard
The first screen of the administrator section is the dashboard of the whole Cytomine platform containing information about online users, the active project, the used storage space and the number of all the images, projects, annotations, etc. through the platform and graphs displaying the last connections.
# Users
This panel, contains the list of all the accounts on your Cytomine instance with their role (User, Guest, Admin or SuperAdmin).
For each user, you can edit its information, lock the user (it will not be able to connect on Cytomine unless you unlock it) and display some details. In the details, you can be connected as the selected user on Cytomine, see its projects, annotations and so on.
# Trusted sources
A trusted source is a validated source hosting external algorithms. This is used to add software and their updates to your instance.
In this panel, you will be able to manage the trusted sources registered in your Cytomine instance.
# Tags
This panel contains all the tags defined in your Cytomine instance.
# Configuration
This panel contains all the global configurations of the instance. Currently, only the welcome message is editable.