This section of the options panel allows you to control the number formatting of the share counts. For example, in some regions of the world, folks use commas instead of periods as a decimal separator.
Decimal Places: This allows you to determine how many decimals will be used after the number is higher than one thousand. You have three choices: zero decimal places (e.g. 3k shares), one decimal place (e.g. 3.2k shares), or two decimal places (e.g. 3.24k shares).
Decimal Separater: This allows you to determine whether we use commas or periods to separate the decimal places after the share number is larger than one thousand. You have to options: period (e.g. 3.2k shares) or comma (e.g. 3,2k shares).
Alignment: This allows you to determine if you want the total share counts to appear to the left of the buttons or at the end of the row of buttons on the right.