Create a "hard stop" at the end of the song

i request for a “hard stop” or a tool or button in the section part of hooktab. i sometimes have a song with an odd number of bars, so when i start to edit chords or melodies, the measures auto create to auto fill or round up to complete a 8 bar line on the GUI. if there was a button so during editing the software the measures stay the same that would save me time.