Sorry but that doesnt work.
I tried to customize the code of the icalevent.edit_page like this and there are only the field that i want to have but with the problem which i outlined above in my first post.
This is the code of my icalevent.edit_page:
{{Nachricht:MESSAGE}}
<div class="adminform">
{{Tab Start:TABSTART#JEV_TAB_COMMON}}
<div class="row jevtitle">
<div class="span2">
{{Title Label:TITLE_LBL}}
</div>
<div class="span10">
{{Title:TITLE}}
</div>
</div>
<div {{Priority:PRIORITY# class="row jevpriority" #class="row jevpriority jev_none"}}>
<div class="span2">
{{Priority Label:PRIORITY_LBL}}
</div>
{{Priority:PRIORITY#<div class="span10">%s</div>}}
</div>
<div {{Calendar label:ICAL_LBL#class="row jevical" #class="row jevical jev_none"}}>
<div class="span2">
{{Calendar label:ICAL_LBL}}
</div>
<div class="span10">
{{Calendar:ICAL}}
</div>
</div>
<div {{Lock Event:LOCK#class="row jevlock" #class="row jevlock jev_none"}}>
<div class="span2">
{{Lock Event label:LOCK_LBL}}
</div>
<div class="span10">
{{Lock Event:LOCK}}
</div>
</div>
<div {{Category:CATEGORY# class="row jevcategory"#class="row jevcategory jev_none"}}>
<div class="span2">
{{Category label:CATEGORY_LBL}}
</div>
<div class="span10">
{{Category:CATEGORY}}
</div>
</div>
<div {{Event Colour:COLOUR#class="row jevcolour" #class=" row jevcolour jev_none"}} >
<div class="span2">
{{Colour label:COLOUR_LBL}}
</div>
<div class="span10">
{{Event Colour:COLOUR}}
</div>
</div>
<div class="row jev_description" id='jeveditor' >
<div class="span2">
{{Description label:DESCRIPTION_LBL}}
</div>
<div class="span10">
{{Description:DESCRIPTION}}
</div>
</div>
<div class="row jeveditlocation" id="jeveditlocation">
<div class="span2">
{{LOCATION label:LOCN_LBL}}
</div>
<div class="span10">
{{Location:LOCN}}
</div>
</div>
{{Tab Start:TABSTART#JEV_TAB_CALENDAR}}
{{Calendar tab content:CALTAB}}
{{Tab Start:TABSTART#Custom Fields Tab One}}
{{Tab 1:CUSTOM_1}}
{{Tab Start:TABSTART#Custom Fields Tab Two}}
{{Tab 2:CUSTOM_2}}
{{Tab Start:TABSTART#JEV_ATTENDANCE}}
{{Attendance Tab:JEV_ATTENDANCE}}
{{Tab Start:TABSTART#JEV_INVITATION_OPTIONS}}
{{Invitations Tab:JEV_INVITATION_OPTIONS}}
{{Tab Start:TABSTART#JEV_REMINDER_OPTIONS}}
{{Reminder Tab:JEV_REMINDER_OPTIONS}}
{{End Tabs:TABSEND}}
</div>
The best solution would be without two tabs, only one tab with the fields: title, category, date and time fields, discription, location.
I dont know how to solve this.