From the 'Functions' menu on the left, hover over 'Carer' or 'Staff' (depending on which you would like to add) then choose 'Add Staff' (or 'Add Carer')

In order to add a carer or staff, as a minimum you need to enter Name, Date of Birth, Gender and Job Role (all marked by a blue asterisk):

Once you have filled in the required detail, click on 'Add Carer Record' (or 'Add Staff Record') to add them to CareFor. 

Once you have added the new staff profile, you will need to amend their access level to ensure they are able to access CareFor. Steps on how to amend access levels can be found here.