Error when 2 people enter rows on a sheet at the same time


We have encountered a problem in our Sheet where if 2 people work on it and insert new rows at the same time they merged into 1 row.

This is quite a big issue with our work as each row is a piece of practical work that needs undertaking, therefore 1 row missed is 1 piece of work missed. Is there a way to prevent this happening in future?