Several people can maintain data in a promotion at the same time. This is useful when several departments are involved in the same promotion, or when several people within a department share duties.

When you select a promotion, you can decide whether you want to maintain the entire promotion (in which case other users cannot work on it) or only selected articles within the promotion (in which case, only those articles are locked while other users can work on the articles which are not locked). Several users can display header data (for example, site groups, themes, promotion modules, and so on) at the same time, but not change it. However, they can change date pertaining to the item lines (for example, promotion prices, volumes, pricing conditions, bonus buys, and free goods). They can also assign new items to a promotion or delete items from a promotion.

Maintenance is done on an article basis:

1. You select a promotion.
2. You then select one or more articles within the promotion. (In essence you are "checking out" those articles.)
3. When you save your changes, the articles become available to other users in case further maintenance is needed.

Two people cannot work on the same article at the same time. If someone has checked out an article, and you try to check it out, the system generates an error message. Once the other person has saved his or her changes, you will once again be able to access the article.

If you select a generic article, the system automatically includes all its variants. That is, no two people can work on variants of the same generic article at the same time.