how to change data shifting from 1 bit to 2 bit using spi in arduino

using arduino mega 2560 & 32x16 p10 module. read serial data using spi currently data shift by 1 bit ie. between two character one column left but i want shifting by 2 bit.

how to change shifting .

The SPI hardware port takes a byte and clocks the bits out along the MOSI -master out slave in- wire. The wire can only be 1 state at any instant therefore only shift 1 bit/state at a time.

If you want to send different data then feed the port register (or library function that does) with different data.