Snooze is an option for when you add a future due date to a Task. When you add a future due date, the option for “Snooze” becomes available. This changes the task into a One-Time Trigger. This will have the effect of hiding the task until it is due. The Trigger gets stored in the Triggers folder and will fire when the due date comes around. That will cause the Task to reappear in your Inbox folder on the due date.
It’s a good idea to do this if you don’t want to “clutter” your This week folder with things that don’t have to be dealt with yet.
For more on One-Time Triggers, see: What are One-Time Triggers?