```
ID  Method  Sales
1   Call    10
2   Visit   20
3   Call    10
2   Visit   5
5   Call    5
1   Call    10
2   Visit   15

```

I would like the output to be:

```
ID  Method  Sales
1   Call    20
2   Visit   40
3   Call    10
5   Call    5

```

I am able to aggregate the sales based on ID but not sure how to bring in the Method.