/settings/company holds the details that belong to the account rather than to you.
Every field except the name is optional and can be cleared.
The name has exactly one writer
PATCH /v1/account/company is the only endpoint that writes the account’s name. There was briefly a separate rename endpoint, and two writers with two different role checks is how “who may rename this account” ends up with two answers.
Timezone is display only
This is worth being clear about, because it looks like it should do more than it does. Nothing reads this field into a query. Every bucket in MCPulse is UTC, and every read uses the same clock — ingest buckets a call into(started_at at time zone 'utc') truncated to the hour, and a date range resolves to whole UTC days.
If the two ever disagreed about where a day starts, every number in the product would be quietly wrong at the edges and nothing would complain. So they do not disagree, and the timezone here is a fact about your company rather than a setting that changes a chart.
See Date ranges.