To create a post for LinkedIn, click the 'Create a Post' button to open the Post Composer.
Select the LinkedIn accounts you would like to post to from the dropdown at the top of the Post Composer.
Now type your post text in the text field.
If you wish to add media, click the icons above your post text to add a link or to add a photo or video.
Once you're satisfied with your post, click the "Publishing Options" on the bottom left. You can publish or schedule, save as a Draft, or save as a Quick Post.
If you're ready to post, click Publish / Schedule. To schedule your post for later, click the gray clock icon and enter the time you'd like it to post. Then, click Schedule now. To post immediately, click Post Now.