Nested buckets
Nest Siblings inside Family so Family includes both.
A bucket can sit inside a larger one. Nest Parents, Siblings and Children inside Family, or Besties inside Friends.
Nothing is copied. When you search Family you also get everything in Siblings, because Siblings is part of Family.
To do it: Menu ☰ → Buckets, tap the smaller one (Coworkers), then the ☰ at the top → “Nest inside another bucket”, and select the larger one (Work).
The same ☰ moves it back out, and the label names the bucket it will affect: “Take out of Work”, or “Move up into Clients” when Work itself sits inside Clients. The line under the bucket’s name shows where it sits, like Clients › Work › Coworkers.
The lists show only top-level buckets. A bucket holding others has a ▼ in front of its name: tap it to show the nested buckets and tap it again to hide them. A bucket’s count is everything it holds, including everything inside the buckets nested in it. An object in both Family and Siblings counts once.
A contact does not need both bucket assignments. Add Darien to Siblings and Family includes him because Siblings is nested inside Family.
If an object already has both assignments, Buckets removes the redundant assignment the next time you open the app.