User Defined Functions available in Zoho Sheet?

User Defined Functions available in Zoho Sheet?

Is it possible to make user defined functions?

In the VBA editor I seem to be able to create Public Functions, but I cannot see them in the function wizard. Also if I try to use the functions directly in cells, they are not recognised.

I wondered if UDF are supported, if they are is the some additional step to enable them?

Gary