Once you have created a Test you will need to provide your users access to it. ClassMarker calls this 'Assigning' your Test. Look out for the 'Assign' buttons across the website.
There are 2 ways to give a Test, depending on your needs:
When to use Groups?
Create Groups and register members into your Groups.
Group members can access Tests you assign to their Group.
Groups are great for testing the same Users on a regular basis.
Example: Teacher/Students, or Business/Employees doing regular testing.
When to use Links?
Links are great for 'once off' or 'bulk testing'. No need to pre-register Users.
'Access restriction' options are available for your Tests security.
See: Assigning Tests via Links
See: Embed your Test on your website
Saving Results with links is only available with Upgraded Accounts
Note: These 2 options can be used separately depending on your requirements for giving Tests, but not combined. (E.G: No need to register users to Groups if you want to give them Tests using the Links option).