Is your proposal related to a problem?

The current standard availability editor only allows intervals like 14:00, 14:15, 14:30, etc. This limitation makes it difficult to use Cal.com in real-world situations where appointments start at "odd" times.

Describe the solution you'd like

Please allow custom start times to be entered freely (e.g. 14:20, 16:05, 09:10)

Describe alternatives you've considered

Additional context

As a driving instructor working with fixed-time appointments (e.g. driving lessons starting at 14:20, 16:05, etc.), I would love the ability to offer precise start times outside of the current 15-minute interval grid.

Requirement/Document

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