1. Enter all of the text you want to be items on your checklist into your Google Doc. Each item that will have a checkbox next to it should be on its own line.
When entering the text for your checklist, it is important to make sure that each item you want to have a checkbox next to it is on its own line. This will make it easier for you to select all of the items at once.
2. Once you've got all of the items you want to turn into a checklist in the document, select all of the items.
To select multiple items at once, click and drag your mouse cursor over each item that you want to include in the checklist. All of the selected items should now be highlighted.
3. In the toolbar, click the checklist icon.
You should see an icon with a checkmark next to it located in your Google Docs toolbar. Clicking this icon will turn your text into a checklist with checkboxes beside each item. If you don't see this icon on the toolbar, look for an option labeled "Insert Checklist". This should open up a small window with the same icon.
4. Each item now has a checkbox next to it. Like in the last section, pressing the Return/Enter key once adds a new checkbox to the checklist. Pressing it twice starts a new paragraph.
Once you have clicked the checklist button, each line of text that you selected should now have a checkbox next to it. To add a new item to your list, simply press the Return/Enter key once and type out the new item. Pressing it twice will start a new paragraph below the current one. You can then click on the checkbox or uncheck them as needed when completing tasks in your checklist.