Ok, I have figured out how to do it.
In GUI mode, there is an option that allows you to modify multiple rows at once. Additionally, the table where you edit the data needs to have a primary key. If you use a form to accomplish this (instead of editing the table), it becomes easier. Then, you need to use the "Filter by" function to find the rows you want to edit and apply the changes using "Changeset"-"Key value pairs" with the changesetArray. Dealing with this part using a form makes it much easier.