the way i do it is to write my post, then hit Enter to start a new line.
then i click on the framed tree icon, Browse and upload the first picture.
then i hit enter again at least twice to put a space between the pictures.
click on the tree icon again. sometimes the system brings up adding an url instead of Browse... if so, click the tab at the top of the writing to use From Computer again. repeat as needed
i like this method because i can add additional verbiage between the pictures if i want to