Here you have to indicate upon entering the roundabout the direction in which you intend to be travelling. If you are going to the right, you indicate right:
https://pic.armedcats.net/h/hb/hbriz/2011/03/06/roundabout_right.jpg
At point 2, you will have to indicate left to exit. As this is a large roundabout, where a car on one side does not have vision of a car on another side, it makes sense and is easy to indicate when leaving.
If you are travelling straight, you do not indicate when entering. However, you still indicate when leaving, same principles as above.
https://pic.armedcats.net/h/hb/hbriz/2011/03/06/roundabout_straight.jpg
However, this is a typical suburban roundabout where I live:
https://pic.armedcats.net/h/hb/hbriz/2011/03/06/roundabout_small_right.jpg
Due to its small size, you have to steer, indicate and change gear usually all at the same time. This isn't possible unless you are a master of dexterity. Your left hand is changing gear but also expected to operate the indicators, while your right steers. Also, indicating upon leaving is not so important on this roundabout. Every other car at the roundabout will be aware of your intentions prior to you entering the roundabout, so there is no need to indicate when leaving. For example, a car coming out of the right hand side road will know I want to turn right, as they have seen my indicator. The only confusion may occur when that person believes I am doing a complete U-turn or thinks I'm turning right when I'm doing a U-turn. Even so, on a roundabout of this size, your intention of exiting will be apparent only a split second after it would have been had you indicated.