Publishing a plugin on the wordpress frontend

Hi there,

I am an absolute beginner with wordpress and I wonder how I can manage to publish
a plugin I installed in my wordpress-frontend?
I have installed a banner-plugin succesfully and added to banners.
But I can’t manage that they appear in my blog.
Do I have to paste any code in the post, or how can I make it happen, that this
plugin is visible in the blog?

Any help would be greatly appreciated,
thank you!