You can select multiple files with FileDrop and insert them into your Sheet.
1. Go to the Drive tab and enter the folder where your files are located.
2. Click the Shift button on your keyboard and with your mouse select the files you want to insert.
4. Click the insert button. Wait for the files to be inserted, it might take a few seconds.
Select and insert all the files in a folder.
1. Go to the Drive tab and select the folder where your files are located.
2. Click the Shift button and with your mouse select the first file.
3. Scroll to the bottom of the folder and click the last file while you are still keeping the shift button pressed, all files are now selected.
4. Click the insert button. Wait for the files to be inserted, it might take a bit of time.