Currently in Renoise if you are on effect_column 0000 at the first 0, inputting a number takes you to the next line’s first 0. Here is prior art that proposes a split/link effect column cursor behaviour.
This is how it’s done in SchismTracker: 
If you switch it to link-mode, and place your cursor to the first 0, pressing a key will take you to the second 0, and then the third 0. then back to the first 0. (Schism only has three characters available in the effect_column).
If you switch it to split-mode, and place your cursor to the first 0, when you press a key, you are taken to the next row. This is how Renoise does it. But, if you are in the effect_column.amount_value section, and input a number, you are taken to the second amount_value section. then when you press a number there, you are taken to the next row’s first amount_value section. This allows for quickly inputting numbers in.