...
The indicators work with Boolean or Text fields. Date Fields can be used if you enter Indicator Text Values as the value that is shown does not make much sense. Number fields can be used, if the number is not too big, or you use Indicator Text Values.
If the field is a Boolean and the value is False the Indicator will not show unless there is an Icons for False entered for that Indicator.
If there is a value in Indicator Image URLs that image will show. Images do not work for False values.
If the field is a Boolean and there is a value in Indicator Text Values then that text will show. Limit this text to 3 characters max, and Uppercase.
If the field is a Boolean and there is no value in Indicator Text Values the Icon will be shown.
If the field is a Text field and there is no value in Indicator Text Values the first 3 characters will show, in Uppercase.
If there is a an Indicator Text Values, the Icon image will not be shown, but the colour will be from the SLDS icon name entered.
There is no field validation to ensure you don't use a combination of entries that look wierd, so if it looks strange, just go back to simple boolean or text fields.
...