 Hi all and welcome to this video about sub-stages in Ecamm. This video is meant to quickly talk about the concept of sub-stages because they make up the structure for entering data into Ecamm and also because the concept can be a bit confusing at first. Basically a sub-stage is represents one process of a water system. So the inventory, like you'll probably know by now, is split into water supply and sanitation, each with three different stages. Then in order to enter information about a stage, you actually create a sub-stage. So it's not possible to enter specific information about, for example, abstraction until you've created an abstraction sub-stage. You can also create multiple sub-stages. This basically means that there are then processes that are happening in parallel. So this would be three different abstraction systems, and you can then enter data that's different about each of them. Anything that's not entered in a sub-stage won't be considered in your evaluation. So if I want to evaluate, for example, three different abstraction methods, one treatment plant, and two different distribution systems. For whatever reason, I would have to enter data into all of these different areas individually. That is about it for the basic concept of sub-stages, but just to reiterate, you use them to enter all the data that's actually about the process itself and they can illustrate process in parallel. The other thing that you could use them for is also processes that happen after another. So, for example, if you have multiple treatment processes that aren't already included in ECAM, as separate treatment processes, you could also illustrate those with sub-stages as well. In the results section, they are then lumped together, so abstraction is seen as one contribution to GHG emissions as well as treatment and distribution and the other stages. Okay, I hope this video was helpful to you all for understanding sub-stages and that you all check out other videos. If you have more questions, happy assessing.