VBA code

Hi all
I want to generate random numbers between (1 &10) in column B starting with B4 and generating ones based on the generated number in B4, for example: if number 5 was generated in B4 , generate 5 ones in range (C4 to C8), and in column A generate random numbers between (1 & 3) starting with A4. Every click the model should give random numbers.
Would you please have a look at the attached example to understand what I want exactly.
I will be very grateful if you can assist me.
Regards.
Ali