what does Bespoke Pay Scale mean?

[JS28]

Can anyone please explain what 'bespoke pay scale' mean in the context below:


For some occupations (such as those in the health and education sectors, part-qualified architects, and barristers undertaking pupillages) the appropriate rates should use bespoke pay scales rather than ‘new entrant’ and ‘experienced’ rates. These occupations will not be subject to the above rules on pay progression.

Your response is much appreciated.