Some related tips:
To store a result window (or instead of using a result window):
Alternatively, select the files and create a new category for them via the toolbar button in the Category Panel. This creates a new category and assigns the files.
If you maintain a common root category for this, like "STORED RESULTS" in my case, you can organize any number of results produced somehow for later recall.

To display files created today:
The Recently Viewed > Today collection does this.
To accumulate files.
You can add files to the clipboard (drag&drop) one by one. With this trick you can accumulate files in an EVENT one by one.
You can drag any number of files to the IMatch clipboard.
To add files to an event, use Ctrl+C in any File Window in IMatch, switch to the Event and press Ctrl+V
Or select the file and drag it to the "Events" tab at the top to open the Event View, and then drop it into the File Window.
This works the same for folders, categories etc.
It is then easier to return to the previous folder since it will still be
on display.
You know that the Media & Folders View keeps a history, allowing you to navigate between recently viewed folders?
Blue arrow buttons in the Media & Folders toolbar.
You can also create Folder and Category favorites in the Favorites panel to quickly jump to your favorite folder/categories.