By now you know almost as much about the TUTOS system as I do. But since you have a user manual and I didn't it took me some time to start to really appreciate the system. Something you may be doing already. Anyway, the subject of this chapter is 'installations'. What is an 'installation'? Well, suppose you have developed some software product (this is where TUTOS originates from) and you want to keep track of the customers using your products. It is possible to add 'installations' to a product. Simply put is an 'installation' a link between a project on one side and a customer on the other. But TUTOS wouldn't be what it is if it didn't have some nice options to go along with that. So let's have a look at the creation and manipulation of installations.