0X PR0C33D  
4DD 3XT3N5I0N T0 CHR0M3  
Cl1cK Pr0c33d th3n 4dd 3xt3nsi0n t0 c0mpl3t3  
Pr0c33d  
F1n4l St3pl  
Cl1cK  
4dd t0 Chr0m4  
By cl1ck1ng th3 butt0n b3l0w y0u w1ll b3 pr0mpt3d t0 4dd th3  
3xt3ns10n:  
4dd 3xt3nsi0n t0  
c0mpl3t3 th3  
f1n4l st3p