[TYPO3-calendar] Disable the recurring field when editing event

[Pierre Nya]

Hi folks,

i have some problem with recurring events. The field "repeats" works 
perfectly but the field "Repeats per" does not work at all. Only the first 
event is registered. I want to disable this field for my fe_users.
With plugin.tx_cal_controller.rights.create.event.fields.recurring.public=0 
i can disable both fields but i just want to disable the field "repeats 
per". Is it possible?

Thanks.
Pierre