Cell protection

[issa.o]

How to insert a password in a single column or single row?

[Jonmo1]

You can't, not really.

What you CAN do is UNlock ALL other cells except the ones you want protected...

With the sheet UNprotected
Press CTRL + A to select ALL cells in the sheet
Format - Cells - Protection - UNcheck "locked"
Click OK

Now highlight the cells you DO want to protect (a single column or single row)
Format - Cells - Protection - Check "Locked"
Click OK

Now protect the sheet as usual, making sure to check "select unlocked cells"