I had create a custom Module.
And now I would like to add a new Button to the core Module Meeting, that use my custom Module. And the delete-Button should also do a function of my custom module.
In the moment I only have create a Button in the original Source code from the meeting-Module CRM_MeetingCommon. But at the next Core Update, this will be deleted.
I think, the directory "patches" is the wrong way, because this only once executed.
How can I change the Meeting-Module permanently?