Missed T2200 Form In T1-2024 Return

Hi

My Client received from his employer work from Home form T2200 after we have file his T1-2024 return Now what is the best way to add that form in his 2024 return do we have to do the the refile option or any other best way please mention with your experience

Adjust the return through Represent a client, the simplest way else do a refile by adding those numbers for work from home.