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1. Click on Contact tab in the side menu, 
2. Click on Search in the Side Menu
3. Enter at least one of the following options in to the relevant search box: 
   • Given Name 
   • Surname
   • Home Institution
   • Status
   • Contact Role 
4. Click on the Search Contact button
5. To filter the list of contacts, in the search box  above the list of contacts, start typing the contacts's first or given name. 
6. This will return a list of contacts that meet the searched criteria
7. When you see the record for the contact you are looking for, click on the contact role for that contact, highlighted in blue in the left column of that row
8. Scroll Down to the Other Details section
9. Click on the Status drop box
10. Select Archived 
11. Click the Save Contact  Button
12. Click on the Login option in the Side Menu
13. Click on the Disable User Login  button
14. Ensure that the Enable option within the Activate User login section appears as No 

Further reading

How to Add / Create a Contact / User record

How to Edit a Contact / User Record

Security Levels