Can I control the pressure/size mapping of the Clay brush with a custom curve?

I saw this in the update log for version 2.82:

• Clay and Clay Strips brush tools now have non-linear input pressure/strength and pressure/size curves to increase their range values.

Does it mean I can control the pressure/size mapping with a custom curve? But I can't find it.

If I want to get smaller and smaller strength as I get bigger and bigger size, how should I do?

Does the current version have such functionality? If not , I recommend adding this feature in the next release.