how to configure Toolbar

being a lifetime user of AutoCad i have recently retired so cannot justify its cost for casual use , so purchased the new paid for DraftSight Standard 2019 hoping it would be similar but what a shock !! my main problem is how to configure the Main Toolbar , which only has 3 Zoom functions but would like more ! i can access the library via tools/configure etc but cannot drag & drop the icons that you could in AutoCad , i must be missing something !! any help would be appreciated