For the Lagna though, since the sign is about to rise, that is going forward, all the degrees of the sign that are already risen ie. those that are already part of you at birth, would already have taken into effect.
So subtract about 5 degrees of your rising sign, you can have all the Amsa effects before that.
Similarly, 5 degrees added to the Lagna, are all the Amsas about to rise.....one which you would get in this current lifetime.
Now my sign Cancer is an even Sign. This means starting from the Amsa above for the Lagna, I get all the Amsas on either side........about 20 in all....10 on either side of the fixed Amsa for the Lagna above....
That is why Lagna (the personality) is complex.........since it is bombarded by so many D60 Amsas.