Not sure I understand the spreadsheet but I'll take a guess and make an assumption that matching values will be adjacent to each other.
If yes, try placing this formula into cell J2 and drag downwards for the cells:
=IF(I2>1, IF(H2="00", "",H2), "")
If any events are more than 1 (I assume this means matching based on the example you have provided), then the formula will next check if H is 00. If it is not then it will show H value (e.g. 03), else it will be blank as you don't want to see 00 in J, you want to see the higher number.