A family of Microsoft word processing software products for creating web, email, and print documents.
If you have set the document to 2 columns, you're using newspaper-style snaking columns. You'll have to fill the first column before you can enter text in the second column. This is not really suitable for your purpose.
I'd create a table with two columns instead. You can type in both columns at will.
(If you only need bullet points, you may be able to use a single column and set the paragraph format to use a hanging indent by (for example) 3 inches / 7.5 cm.)