In a mode sheet, you can have rows that look like this:
sip_puff_threshold_soft, normal, 5
sip_puff_threshold, normal, 20
sip_puff_maximum, normal, 25
I usually stick them down after the outputs' rows, but they can go in row 4 or later.
They will be in effect only on that sheet.
In column C, you will get little red triangles warning that the value in the cell is not an input, but you can ignore the warning.