People connect with you on LinkedIn as an individual, rather than your company, so invitations aren't offered as a feature on LinkedIn Recruiter. You can only send invitations from your personal LinkedIn account, and not from LinkedIn Recruiter…

When viewing a candidate’s profile in LinkedIn Recruiter, you can see how you’re connected to the candidate. People in your network are identified with an icon on the profile next to the person's name. Note: The ability to see your Connection Path…