You may schedule and post content to your Linkedin personal profiles, company pages and groups.

Connecting a Linkedin Profile:

Connecting a Linkedin Profile

Once you have connected your Linkedin accounts, each account will now show in your list of Target Profiles when composing a message:

Posting on Linkedin

UPDATE: As of April 11, 2018, Linkedin has completely closed of groups to all partners and integrators. Read this article for more information.