Is it possible to add function field to the Quotes/Opportunities module?

Hello,

Like we have Case Updates Threaded: field in the cases module. Could we add similar function field into quotes or opportunities modules? SuiteCRM 7.13 & PHP 7.4

This field allows users to write an update about the case.

It is possible, but quite complex to add, I would not advise it unless you are very familiar with coding SuiteCRM.

On v8 that field is more generic, and is easier to add to more modules. But that is not documented yet.