When you type 1, a period, a space, and some text, then press Enter, Word automatically starts a numbered list for you. Type * and a space before your text, and Word makes a bulleted list.
When you’re done with the list, press Enter until the bullets or numbering switches off.
Create a list from existing text
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Select the text you want to change into a list.
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Go to Home> Bullets or Numbering.
Source: Microsoft