When the consonant is unvoiced and aspirated, the diacritic shifts its airstream to be ejective. If the language doesn't have ejectives, then it turns into its plain form.
When the consonant is breathy voiced, it becomes implosive. If the language doesn't have implosives, then it turns into its plain form.
When the diacritic is applied, the consonant becomes prenasalized. These occur with other consonant graphemes, and are distinct from the bilabial nasal /m/ that occurs on its own. No additional lines need be added to the ingungu when it occurs with other consonants, as the place of articulation is given by them instead.
When its used on an ejective click consonant, hte ingungu symbolized prenasalization. If it's a plain click, then the click becomes a nasal one.
