how to make a function(vb script) global (as in used from every w.

[nore]

how to make a custom function(vb script) available globally (as in used from
every workbook, without having to add the module manually)

 

[Peter T]

If you mean a UDF (User Defined Function) written in VBA, if you place it in
an Addin it should be available to all workbooks.

Alternatively you can also put it in a normal xls and use it in a cell like
this:

=Personal.xls!myFunction(arg1, arg2)

Regards,
Peter T