Help with how to pay deposits

Hi I’ve find a house for my family lovely landlord but the problem is the council are paying my deposit and the landlord wants me to do it few open rent so does any one know how the council pay my deposit to openrent can they do that ?
Please if anyone knows how its works as I’ve looked up and it dont tell you how the council deposit paying scheme works if I’m doing it through openrent
Thank you for any replys