Using the New Outlook for Mac for personal email and calendar
Yes this worked! For those that need to know how, on the toolbar in Outlook, Click on the three dots. It opens a dialog box. At bottom is button to "reset" tool bar. Click it. Click Done. I am now able to drag the outlook box down to half screen like before. No more switching to legacy and out to do this. Geez why can't MS help offer this help. Thanks for the tip!!
Another tip I just saw was in that same tool bar dialog box, at the bottom is an option for "Show Labels" mine was defaulting to "Show Labels Always". I changed it to "Show labels as Space permits". Clicked Done . Shrunk box even more and the icons "hide" as I shrink, and come back as enlarge. Unbelievable that these are not additional steps that MS Help offers community!