Maximum 1 URL and 1 Keyword per property, so if you're ordering CLASSIC pack, put not more than 5 URLs and 5 Keywords, if ordering HYBRID pack, put no more than 10 URLs and 10 Keywords, and if ULTIMATE pack - 20 URLs and 20 Keywords maximum.
If you're ordering Booster Dose, I recommend no extra link should be put in the extra content-page to make them look really legit and authority and not like "built-for-backlink-only" type property. However, you can care less and utilize the posts to put another link to another page of your site. In that case, your LIMIT of URLs and Keywords is just DOUBLE. Simply put, if you buy booster dose along with the main package, you can put maximum 10 URLs and Keywords for CLASSIC, 20 URLs and Keywords for HYBRID and 40 URLs and Keywords for ULTIMATE.
Please note, we might not be able to obey all/any of your special request/s - it totally depends on the kind of the request and our ability. We will surely mail you if that's the case.
Having said above, we encourage you to go WILD here, if any particular thing you want me to do in your package, just mention it and I'll make sure to try my best.