Only use a numbered list for items that are in sequential order. If the list does not have an order, use bullets.
Create an actual bulleted or numbered list for list items; don't type the numbers or use special characters as bullets.
Make sure bulleted and numbered lists are parallel, that each item uses the same sentence structure. For example, all the items might be complete sentences or phrases beginning with a verb in the same tense.
Use punctuation at the end of complete sentences in a list.
Create a list in a knowledge base article or service description
To create a bulleted or numbered list, click the Insert/Remove Numbered List or Insert/Remove Bulleted List button. Pressing Enter after each item will create a new bullet or number. Press Enter again to end the list.
You can also select lines of existing text and click one of the list buttons to convert the lines to a list.
To add a line break in a list, hold down Shift and press Enter.
For nested bulleted or numbered lists, select the items to nest, and click the Increase Indent button. Numbers and bullets can be combined in a nested list. The nested list can be selected and changed from the type (bullets or numbers) inherited from the parent list by clicking the Bulleted List button or Numbered List button.
Microsoft Writing Style Guide: Lists