Disabled ‘+’ button
The plus button does not adjust the range value successfully. This is caused because the range below it has no ‘room’ to adjust. For example, below, we can not increas the maximum boundary of Range 2 because Range 3 is at 6 to 6 and has no room to increase it’s minimum boundary. The range below the one being adjusted must have a difference of at least 1 between its minimum and maximum to allow it to auto adjust. We could, for example, increase Range 3’s maximum boundary to 7 to allow Range 2 to then be adjusted.
Disabled ‘+ Add Score Range’ button
When you add a new range, it splits the difference of the previous range. If there is no scope to do this (i.e. the current final range is from and to the same value, e.g. 10 to 10), we can not split this and add a new range. We therefore need to adjust this range first
In the example above, we could do this by adjusting the reducing the maximum boundary of Range 3, therefore auto adjusting the minimum or Range 4 and allowing a new range to be added
This then allows the new range to be added, splitting Range 4 values with the new Range: