You can create a carriage return in a Google Spreadsheet by holding down the command key while pressing the enter key. This will force the cursor to the next line. Pressing command enter a second time will create an extra line after each paragraph within the cell.
Alternatively, you can type in the cell and press either "C" or "H" to create line breaks in the cell.
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While typing in a spreadsheet cell, hold down the command key while you press the enter key. This will force the cursor to the next line. Holding down command enter a second time will create the extra line after each paragraph within the cell.
Carriage Return in a Google Spreadsheet - Teacher Tech
Jeff Herb, an educator, blogger, and podcaster, explains how to create line breaks in a cell in Google Sheets using a simple key combination. This can be done by typing in the cell and pressing either "C" or "H" when typing. Jeff Herb is a Top 50 EdTech Blog Expert in eLearning and EdTech Editor's Choice Content Award Winner.
Create Line Breaks in a Cell in Google Sheets | Instructional Tech Talk