e-planning is an ad-server that integrates with any web site, no matter the programming language used or the web server's software. The way of integrating it is through the inclusion in the web site of tags as IMG, IFRAME or SCRIPT, that make reference to the e-planning servers. Their working is not different from any other remote ad server.
e-planning generates a code for each space. Each code is independent from others and you can paste more that one code in the same page without problems. Nevertheless, if you wish to use the functionalities of competitive campaigns and companion spaces, you must do a modification to the code if you are going to paste several in the same page. Here are both options:
Simply paste the code you obtained from e-planning without making any changes. You should paste the code in a position of the web page considering that images will be shown there. If you had already used another ad server, the task is simple since you will only have to replace the codes from the previous ad server in the same position. If you did not use any ad server but already have fix banners in your site, replace the IMG tags that load this banners with the codes generated by e-planning.