Directions that might help for snip and sketch.
Open snip and sketch.
Select new in the upper left corner.
If you choose the first option (on the left of the 4 boxes that show at the top middle of your screen) your mouse will look like a cross/crosshairs. Second from the left will aallow you to make a freeform clip, 3rd from left will do full screen, and 4th will exit)
Go to the upper most left corner of what you want to snip.
Press and hold the left mouse button.
Move your mouse down and to the right to get everything you want to snip - then let your finger off the left mouse button.
What you snipped will appear in a new snip & sketch window.
Make any changes (highlighting, etc) and then click the save icon (upper right corner, looks like a picture of a floppy).
Windows explorer will open - it should default to your pictures folder. Choose the folder you want to save to, type in what you want for a file name and select save.
Picture is saved in that folder.
Once saved close the snip and sketch window with your snip.
If you need another snip, select new and start again.