How do I split cells in excel when making a table?

[Excel splitting cells]

I am making a table. The first column is my primary column. I want the second
column to contain multiple choices and I want he user to pick multiple
choices, how do I do that should I split the cells, if so how?

 

[Ragdyer]

Debra Dalgleish has a web site where you can learn about creating drop down
lists using "Data Validation".

http://www.contextures.com/xlDataVal01.html