If you’re dealing with screen that is too small to see comfortably, there’s a tool ready to help you built-in to Windows 10. I run into this problem frequently when viewing spreadsheets being shared during a video call.
Press the Windows key on your keyboard and type in “MAG” until the Magnify application shows up as one of the best matches. Run that application and you can pan around the screen at an increased magnification (which you can control from the app toolbox. You can also control the panning speed if things are sliding around too fast. When you’re done, click on the X on the toolbox to turn off the app.
Bonus tip – when the Magnify app is listed as your best match, click on the Pin to Taskbar option to keep it ready at your fingertips.