Best way to use credit card To improve credit scoring

I am five years post bankruptcy discharge from four years ago. I am currently waiting for my credit card to arrive. I want to buy my weekly shop on this and pay it off to try and improve my credit by showing that I can be a responsible person to lend to for a future mortgage. 
My question is do I pay the balance of immediately after buying my shopping or do I wait for the monthly bill to be generated and then pay off the balance in full or does it not matter. 
Many thanks
Saving for a house in 2025 LISA £7726/£15000 Emergency Fund £1000/£6000 No spend Year 2023


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