Excel VBA User forms help for stock management

Inventory system excel I am not familiar with user forms, but I need 2 in one spreadsheet. 1 for stock in and the other for stock out. So, when I click Stock In, the user form for stock in is launched and when i click stock out the userform for stock out is launched.I have attached pictures of what the userform should look like and how it must work. And screenshot form the way the excel spreadsheet must work. I will provide the excel spreadsheet, you just need to program it and set up the userforms. This is only a couple of hours for someone who knows what they are doing.