I use draw to wireframe or create product workflows. I have create shapes using existing shapes. However, while wireframing, I have creating same shapes from scratch. I spend lot of time in doing repeated activity. If there is a feature create and save custom shapes to libre draw then it would save lot of time. I have attached a screenshot of a shape that I use repeatedly.
Created attachment 188842 [details] A shape I create repeatedly
Created attachment 188843 [details] Shape that I use repeatdly
Created attachment 188844 [details] A shape I create repeatedly
LibreOffice has the Gallery for such purpose. Find an introduction in chapter "LibreOffice Gallery" in "Getting Started Guide" book, page 181. https://documentation.libreoffice.org/en/english-documentation/ In case you need help to use the Gallery you can ask on https://ask.libreoffice.org/c/english/5