How to add your own library in MATLAB Simulink Library Browser

https://www.youtube.com/watch?v=WxFBXEZo0VI&ab_channel=HighVoltageEngineeringbyMGNiasar

https://ww2.mathworks.cn/help/simulink/ug/creating-block-libraries.html

Libraries in Simulink Made Easy:
https://www.youtube.com/watch?v=xWmIACn5Te0&ab_channel=MATLAB