From the "Dynamic Reports Selection" dialog, in a "Select Extra Transiting/Progressing/Radix Points" dialog, when you have selected all the required midpoints, fixed stars, Arabic Parts, asteroids and fixed zodiacal positions for the Extra Dynamic Points file, you can save your work by clicking on the Save button. This will save your selections and return you to the "File Management" dialog box, from which you can select the newly edited file, or choose another file to edit.