Picking and labeling peaks in Sparky
From NMR Wiki
Switch to Find/add peak pointer mode
Click on the peak. A box around the peak should appear. If the box is too small increase box size
Type at.
A window prompting you to enter residue and atom assignment will show up.
Type in appropriate names and click 'Ok'. If you don't want to assign residue - just leave those fields blank (in that case peak label will contain ? mark)
Now a peak label should appear.
Peak assignments are stored in .save files. Make sure to save your spectrum.