[docs] updated toc and added projects docs

docs/user/setup/docs.user.setup.users.md

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+---
+{
+	"_label": "Adding Users"
+}
+---
+
+ERPNext has a role-based permission system, which means that you can assign Roles to Users, and permissions on Roles.Each ERPNext user has a Profile. The Profile contains the user’s email and authentication and can be set from:
+
+> Setup > Users and Permissions > Users
+
+#### Step 1: Adding a new User
+
+To add a new user, click on “Add” button and enter the user’s
+
+- Email Id
+- First Name
+- Last Name
+
+![User](img/user1.png)
+
+#### Step 2: Password and Image
+
+Enter a new password and select the image of the user. Write a small description about the User under the heading Short Bio
+
+![User](img/user2.png)
+
+<br>
+> Roles will be visible only after you save the Docuemnt.
+
+
+#### Step 3 :Setting Roles and Email Settings
+
+Check the boxes which the User can access. ERPNext comes with a bunch of predefined roles. 
+Enter his email settings. The message will appear at the end of every mail. 
+
+![User](img/user3.png)
+
+#### Step 4: Security Settings
+
+- Enabling / disabling users: You can enable or disable users. Disabled users will not be able to log in.
+- Setting login time: If login time is set, users can only log-in within the defined hours as per your timezone.
+
+If you wish to give the user access to the system only between office hours, or during weekends, mention it under security settings.
+
+
+![User](img/user4.png)
+