re: I don’t need so many fields in the entries and in the form. How can I remove unnecessary fields from field groups such as Name?
First… I going to assume this question relates to the Form extension, yes?
The first and last name field can not be removed because if an entry type is an Individual those are required fields. That said, here’s what you could do…
Go to the Connections : Settings admin page, click the Form tab. Set the default entry type to Organization and disable the option to allow a user to change the entry type. You can use the instructions in this QuickTip to change the Organization field label to Name. Now, if you decide to do this all your entry will be organizations and there will never be a way to filter or search by just the first or last name.
re: How can I remove the Image block completely?
You can disable this on the Connections : Settings admin page, under the Form tab.
Hope that helps!