Yes, sounds like you need something like the Lloyds Bank Treasurer’s account, for community groups.
It allows dual-authorisation for online payments, a chequebook supporting two signatures for cheques, and the possibility of using debit cards too. It’s all free if you are eligible.
They have an OK app and also support cash or cheque deposits (including cheques paid in via the app if that’s needed).
It may seem a bit like overkill but it’s probably what you need, and using a personal bank account isn’t really appropriate.
You would have to either do separate accounting in Excel to divide up the money or open savings accounts alongside the current account to create Pot-style functionality, but that isn’t insurmountable with a bit of organisation.