One size for the whole batch
Output size, format and quality are shared by every image in the queue, so a set of screenshots for an article or a docs page comes out consistent. If one image needs something else, tick Separate settings for this image.
Crop each image, or all at once
Every screenshot keeps its own crop. Click through the queue, or use the arrow keys, to adjust them. For screenshots of the same size, one crop can be copied to all of them in one click.
Save them all at once (Pro)
Saving the whole queue at once is part of Pro. In Chrome and Edge, Save all to folder writes every file into a folder you pick and remembers it for the session; other browsers get one ZIP. Pro also lets you change the file name pattern; clashes get a -2 or -3 suffix. In the free version, save each image with Save.