There is an extra halant after every character in this keyboard type although it doesnt exist much in Punjabi. We can use tilde for halant is those 3 characters.
When we type single characters it should not be ਸ੍ ਦ੍ ਫ੍ ਗ੍ ਹ੍ ਜ੍ ਕ੍ instead it should be ਸ ਦ ਫ ਗ ਹ ਜ ਕ on conditions when no vowel sound it attached.