Organising quarter peals There is this guidance on planning an outing which largely translates to organising quarter peals too:
https://runningatower.cccbr.org.uk/docs/buildingateam/outing/
I agree with Philip and John that finding the ringers available on a given date, suitable for a chosen method, often comes first and finding the tower follows.
If your friend is struggling to organise there could be two main reasons:
Some people don’t find it easy to plan ahead and need a pretend deadline to force themselves to get organised in advance
If your friend is trying to arrange more challenging quarter peals they might struggle to get people to say yes because people will worry that the band will not be able to manage the chosen method (or perhaps the chosen bells)
Ask your friend why they think they struggle, consider splitting the responsibility in a different way so that one of you finds the ringers and the other finds the tower and collects the tower donation, you could alternate responsibilities on different quarters.
Consider whether someone else who regularly rings with you would like to sometimes be the organiser, to share the workload.
If someone isn’t able to organise that doesn’t mean you need to exclude them from ringing in the quarters but I can understand that relying on them to organise and then having a last minute cancellation is frustrating.