How to make dropdown list when user select one list in cell, the next cell will display related data in drop down list.
For instance, I make cell A2 contain dropdown list such as Japan, Korea, Thailand. Next cell B2 has list such as Tokyo, Osaka, Busan, Seoul, Phuket, Krabi.
When user select in cell A2 Korea and move to next cell B2, it only show dropdown list Busan and Seoul. If user select Japan in cell A2 it will show dropdown list Tokyo, Osaka in cell B2.
How to do it and is it possible to make it? Is there any source I can refer?