For the client it is important to be aware of the current situation, he quickly makes changes (e.g. additional functionality in the process of doing the project).
For customers, it is important to be aware of the current situation, he quickly amends (for example, additional functionality in the process of the project).
For the customer it is important to be informed about the current situation, he quickly makes a change (for example, the additional functionality in the process of the project).