You can also set up additional user roles, for instance if you wanted an individual to be able to access the admin function but just to be able to add users/ departments upload vendors etc but not access anything else in the admin section.
To do this go to Admin > User Roles and create a new user role IE Account's Assistant.
Under the authorizations tab and under the administration section you will need to select the option 'Yes' to 'Is Administrator' as this will then give them the admin option in top right hand corner.
Under the general administration you can then set what access they would need to have IE Read and Write access for the for the suppliers drop down.
On the departments section you can then set them to Read & Write access which will allow them to create new departments and then under user management you can set the necessary permissions for adding users and adjusting what they can do.
If you hover the information icon this will show you what each access will include.
Once the user logs in and goes to Admin they will then see the access you have created for them like shown below: