Is it already published? If so yes, but you can cross-post it to the community.

When you post to a different front end, that's considered a tribe. When you post to a Community it's a little different. You must publish directly to a tribe, but cannot cross-post to a tribe.

What front end have you been using? Steemit is more difficult to navigate. I use Steempeak and it's easier to navigate the steemscape. I only use tribe front ends to publish too, but not to navigate around.

Sorry it's a bit complicated. Are you on Discord?