  Proposals for quantum information applications are frequently based on the
coherent manipulation of spins confined to quantum dots. For these
applications, p-type III-V material systems promise a reduction of the
hyperfine interaction while maintaining large $g$-factors and strong spin-orbit
interaction. In this work, we study bottom-gated device architectures to
realize single and serial multi-quantum dot systems in Schottky contacted
p-type GaSb nanowires. We find that the effect of potentials applied to gate
electrodes on the nanowire is highly localized to the immediate vicinity of the
gate electrode only, which prevents the formation of double quantum dots with
commonly used device architectures. We further study the transport properties
of a single quantum dot induced by bottom-gating, find large gate-voltage
dependent variations of the $g^*$-factors up to $8.1\pm 0.2$ as well as
spin-orbit energies between $110$-$230\,\mu$eV.
