Hello, in Bohemia under Austrian law at the time, it unfortunately does not play a significant role - for genealogy. Younger than 24 years only need the consent of parents (father´s paternal blessing).
Older than 24 years were adults - from the perspective of law and church they had more freedom - did not need this consent (but at the time without family acceptance you can´t do practically anything ... but that is another question).
The lower limit was for boys of 14 years for girls to 12 years. But the current age was 18 to 25 years (mens also later).