new user can create his account in manageengine servicedesk

Hi Team,

I am setting up the Free of the Helpdesk Standard (SLA) , 

I want  Know can we enable  new user self log in on manageengine service desk portal for  request.

 I am using manageengine service desk in work-group environment .

for example :

I  am a new user and i don't have log in id of manageengine service desk portal.

can i create my own log in profile in manageengine without administrator help .